diff --git a/src/main/java/org/kohsuke/github/GHEventPayload.java b/src/main/java/org/kohsuke/github/GHEventPayload.java
index 9413418af1..0f65498678 100644
--- a/src/main/java/org/kohsuke/github/GHEventPayload.java
+++ b/src/main/java/org/kohsuke/github/GHEventPayload.java
@@ -1,10 +1,12 @@
 package org.kohsuke.github;
 
+import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonSetter;
 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 
 import java.io.IOException;
 import java.io.Reader;
+import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Date;
 import java.util.List;
@@ -265,16 +267,47 @@ void lateBind() {
      * @see <a href="https://docs.github.com/en/rest/reference/apps#installations">GitHub App Installation</a>
      */
     public static class Installation extends GHEventPayload {
-        private List<GHRepository> repositories;
+
+        private List<Repository> repositories;
+        private List<GHRepository> ghRepositories = null;
 
         /**
-         * Gets repositories.
+         * Gets repositories. For the "deleted" action please rather call {@link #getRawRepositories()}
          *
          * @return the repositories
          */
         public List<GHRepository> getRepositories() {
+            if ("deleted".equalsIgnoreCase(getAction())) {
+                throw new IllegalStateException("Can't call #getRepositories() on Installation event "
+                        + "with 'deleted' action. Call #getRawRepositories() instead.");
+            }
+
+            if (ghRepositories == null) {
+                ghRepositories = new ArrayList<>(repositories.size());
+                try {
+                    for (Repository singleRepo : repositories) {
+                        // populate each repository
+                        // the repository information provided here is so limited
+                        // as to be unusable without populating, so we do it eagerly
+                        ghRepositories.add(this.root().getRepositoryById(singleRepo.getId()));
+                    }
+                } catch (IOException e) {
+                    throw new GHException("Failed to refresh repositories", e);
+                }
+            }
+
+            return Collections.unmodifiableList(ghRepositories);
+        }
+
+        /**
+         * Returns a list of raw, unpopulated repositories. Useful when calling from within Installation event with
+         * action "deleted". You can't fetch the info for repositories of an already deleted installation.
+         *
+         * @return the list of raw Repository records
+         */
+        public List<Repository> getRawRepositories() {
             return Collections.unmodifiableList(repositories);
-        };
+        }
 
         /**
          * Late bind.
@@ -286,17 +319,64 @@ void lateBind() {
                         "Expected installation payload, but got something else. Maybe we've got another type of event?");
             }
             super.lateBind();
-            if (repositories != null && !repositories.isEmpty()) {
-                try {
-                    for (GHRepository singleRepo : repositories) {
-                        // populate each repository
-                        // the repository information provided here is so limited
-                        // as to be unusable without populating, so we do it eagerly
-                        singleRepo.populate();
-                    }
-                } catch (IOException e) {
-                    throw new GHException("Failed to refresh repositories", e);
-                }
+        }
+
+        /**
+         * A special minimal implementation of a {@link GHRepository} which contains only fields from "Properties of
+         * repositories" from <a href=
+         * "https://docs.github.com/en/webhooks-and-events/webhooks/webhook-events-and-payloads#installation">here</a>
+         */
+        public static class Repository {
+            private long id;
+            private String fullName;
+            private String name;
+            private String nodeId;
+            @JsonProperty(value = "private")
+            private boolean isPrivate;
+
+            /**
+             * Get the id.
+             *
+             * @return the id
+             */
+            public long getId() {
+                return id;
+            }
+
+            /**
+             * Gets the full name.
+             *
+             * @return the full name
+             */
+            public String getFullName() {
+                return fullName;
+            }
+
+            /**
+             * Gets the name.
+             *
+             * @return the name
+             */
+            public String getName() {
+                return name;
+            }
+
+            /**
+             * Gets the node id.
+             *
+             * @return the node id
+             */
+            public String getNodeId() {
+                return nodeId;
+            }
+
+            /**
+             * Gets the repository private flag.
+             *
+             * @return whether the repository is private
+             */
+            public boolean isPrivate() {
+                return isPrivate;
             }
         }
     }
diff --git a/src/test/java/org/kohsuke/github/GHEventPayloadTest.java b/src/test/java/org/kohsuke/github/GHEventPayloadTest.java
index 783fa06a6f..91560170c7 100644
--- a/src/test/java/org/kohsuke/github/GHEventPayloadTest.java
+++ b/src/test/java/org/kohsuke/github/GHEventPayloadTest.java
@@ -990,8 +990,33 @@ public void InstallationRepositoriesEvent() throws Exception {
      *             the exception
      */
     @Test
-    @Payload("installation")
-    public void InstallationEvent() throws Exception {
+    @Payload("installation_created")
+    public void InstallationCreatedEvent() throws Exception {
+        final GHEventPayload.Installation event = getGitHubBuilder().withEndpoint(mockGitHub.apiServer().baseUrl())
+                .build()
+                .parseEventPayload(payload.asReader(), GHEventPayload.Installation.class);
+
+        assertThat(event.getAction(), is("created"));
+        assertThat(event.getInstallation().getId(), is(43898337L));
+        assertThat(event.getInstallation().getAccount().getLogin(), is("CronFire"));
+
+        assertThat(event.getRepositories().isEmpty(), is(false));
+        assertThat(event.getRepositories().get(0).getId(), is(1296269L));
+        assertThat(event.getRawRepositories().isEmpty(), is(false));
+        assertThat(event.getRawRepositories().get(0).getId(), is(1296269L));
+
+        assertThat(event.getSender().getLogin(), is("Haarolean"));
+    }
+
+    /**
+     * Installation event.
+     *
+     * @throws Exception
+     *             the exception
+     */
+    @Test
+    @Payload("installation_deleted")
+    public void InstallationDeletedEvent() throws Exception {
         final GHEventPayload.Installation event = getGitHubBuilder().withEndpoint(mockGitHub.apiServer().baseUrl())
                 .build()
                 .parseEventPayload(payload.asReader(), GHEventPayload.Installation.class);
@@ -1000,12 +1025,13 @@ public void InstallationEvent() throws Exception {
         assertThat(event.getInstallation().getId(), is(2L));
         assertThat(event.getInstallation().getAccount().getLogin(), is("octocat"));
 
-        assertThat(event.getRepositories().get(0).getId(), is(1296269L));
-        assertThat(event.getRepositories().get(0).getNodeId(), is("MDEwOlJlcG9zaXRvcnkxMjk2MjY5"));
-        assertThat(event.getRepositories().get(0).getName(), is("Hello-World"));
-        assertThat(event.getRepositories().get(0).getFullName(), is("octocat/Hello-World"));
-        assertThat(event.getRepositories().get(0).isPrivate(), is(false));
-        assertThat(event.getRepositories().get(0).getOwner().getLogin(), is("octocat"));
+        assertThrows(IllegalStateException.class, () -> event.getRepositories().isEmpty());
+        assertThat(event.getRawRepositories().isEmpty(), is(false));
+        assertThat(event.getRawRepositories().get(0).getId(), is(1296269L));
+        assertThat(event.getRawRepositories().get(0).getNodeId(), is("MDEwOlJlcG9zaXRvcnkxMjk2MjY5"));
+        assertThat(event.getRawRepositories().get(0).getName(), is("Hello-World"));
+        assertThat(event.getRawRepositories().get(0).getFullName(), is("octocat/Hello-World"));
+        assertThat(event.getRawRepositories().get(0).isPrivate(), is(false));
 
         assertThat(event.getSender().getLogin(), is("octocat"));
     }
diff --git a/src/test/resources/org/kohsuke/github/GHEventPayloadTest/installation_created.json b/src/test/resources/org/kohsuke/github/GHEventPayloadTest/installation_created.json
new file mode 100644
index 0000000000..d9923841e1
--- /dev/null
+++ b/src/test/resources/org/kohsuke/github/GHEventPayloadTest/installation_created.json
@@ -0,0 +1,98 @@
+{
+  "action": "created",
+  "installation": {
+    "id": 43898337,
+    "account": {
+      "login": "CronFire",
+      "id": 68755481,
+      "node_id": "MDEyOk9yZ2FuaXphdGlvbjY4NzU1NDgx",
+      "avatar_url": "https://avatars.githubusercontent.com/u/68755481?v=4",
+      "gravatar_id": "",
+      "url": "https://api.github.com/users/CronFire",
+      "html_url": "https://github.com/CronFire",
+      "followers_url": "https://api.github.com/users/CronFire/followers",
+      "following_url": "https://api.github.com/users/CronFire/following{/other_user}",
+      "gists_url": "https://api.github.com/users/CronFire/gists{/gist_id}",
+      "starred_url": "https://api.github.com/users/CronFire/starred{/owner}{/repo}",
+      "subscriptions_url": "https://api.github.com/users/CronFire/subscriptions",
+      "organizations_url": "https://api.github.com/users/CronFire/orgs",
+      "repos_url": "https://api.github.com/users/CronFire/repos",
+      "events_url": "https://api.github.com/users/CronFire/events{/privacy}",
+      "received_events_url": "https://api.github.com/users/CronFire/received_events",
+      "type": "Organization",
+      "site_admin": false
+    },
+    "repository_selection": "selected",
+    "access_tokens_url": "https://api.github.com/app/installations/43898337/access_tokens",
+    "repositories_url": "https://api.github.com/installation/repositories",
+    "html_url": "https://github.com/organizations/CronFire/settings/installations/43898337",
+    "app_id": 421464,
+    "app_slug": "kapybro-dev",
+    "target_id": 68755481,
+    "target_type": "Organization",
+    "permissions": {
+      "checks": "write",
+      "issues": "write",
+      "actions": "read",
+      "members": "read",
+      "contents": "write",
+      "metadata": "read",
+      "statuses": "write",
+      "single_file": "read",
+      "pull_requests": "write",
+      "administration": "read"
+    },
+    "events": [
+      "issues",
+      "issue_comment",
+      "organization",
+      "public",
+      "pull_request",
+      "pull_request_review",
+      "pull_request_review_comment",
+      "push",
+      "repository",
+      "status"
+    ],
+    "created_at": "2023-11-11T10:55:06.000+08:00",
+    "updated_at": "2023-11-11T10:55:06.000+08:00",
+    "single_file_name": ".github/kapybro/config.yml",
+    "has_multiple_single_files": true,
+    "single_file_paths": [
+      ".github/kapybro/config.yml",
+      ".github/kapybro/rules.yml"
+    ],
+    "suspended_by": null,
+    "suspended_at": null
+  },
+  "repositories": [
+    {
+      "id": 1296269,
+      "node_id": "MDEwOlJlcG9zaXRvcnkxMjk2MjY5",
+      "name": "Hello-World",
+      "full_name": "octocat/Hello-World",
+      "private": false
+    }
+  ],
+  "requester": null,
+  "sender": {
+    "login": "Haarolean",
+    "id": 1494347,
+    "node_id": "MDQ6VXNlcjE0OTQzNDc=",
+    "avatar_url": "https://avatars.githubusercontent.com/u/1494347?v=4",
+    "gravatar_id": "",
+    "url": "https://api.github.com/users/Haarolean",
+    "html_url": "https://github.com/Haarolean",
+    "followers_url": "https://api.github.com/users/Haarolean/followers",
+    "following_url": "https://api.github.com/users/Haarolean/following{/other_user}",
+    "gists_url": "https://api.github.com/users/Haarolean/gists{/gist_id}",
+    "starred_url": "https://api.github.com/users/Haarolean/starred{/owner}{/repo}",
+    "subscriptions_url": "https://api.github.com/users/Haarolean/subscriptions",
+    "organizations_url": "https://api.github.com/users/Haarolean/orgs",
+    "repos_url": "https://api.github.com/users/Haarolean/repos",
+    "events_url": "https://api.github.com/users/Haarolean/events{/privacy}",
+    "received_events_url": "https://api.github.com/users/Haarolean/received_events",
+    "type": "User",
+    "site_admin": false
+  }
+}
\ No newline at end of file
diff --git a/src/test/resources/org/kohsuke/github/GHEventPayloadTest/installation.json b/src/test/resources/org/kohsuke/github/GHEventPayloadTest/installation_deleted.json
similarity index 100%
rename from src/test/resources/org/kohsuke/github/GHEventPayloadTest/installation.json
rename to src/test/resources/org/kohsuke/github/GHEventPayloadTest/installation_deleted.json
diff --git a/src/test/resources/org/kohsuke/github/GHEventPayloadTest/wiremock/InstallationCreatedEvent/__files/1-r_o_hello-world.json b/src/test/resources/org/kohsuke/github/GHEventPayloadTest/wiremock/InstallationCreatedEvent/__files/1-r_o_hello-world.json
new file mode 100644
index 0000000000..fd3c1ce7ca
--- /dev/null
+++ b/src/test/resources/org/kohsuke/github/GHEventPayloadTest/wiremock/InstallationCreatedEvent/__files/1-r_o_hello-world.json
@@ -0,0 +1,108 @@
+{
+  "id": 1296269,
+  "node_id": "MDEwOlJlcG9zaXRvcnkxMjk2MjY5",
+  "name": "Hello-World",
+  "full_name": "octocat/Hello-World",
+  "private": false,
+  "owner": {
+    "login": "octocat",
+    "id": 583231,
+    "node_id": "MDQ6VXNlcjU4MzIzMQ==",
+    "avatar_url": "https://avatars.githubusercontent.com/u/583231?v=4",
+    "gravatar_id": "",
+    "url": "https://api.github.com/users/octocat",
+    "html_url": "https://github.com/octocat",
+    "followers_url": "https://api.github.com/users/octocat/followers",
+    "following_url": "https://api.github.com/users/octocat/following{/other_user}",
+    "gists_url": "https://api.github.com/users/octocat/gists{/gist_id}",
+    "starred_url": "https://api.github.com/users/octocat/starred{/owner}{/repo}",
+    "subscriptions_url": "https://api.github.com/users/octocat/subscriptions",
+    "organizations_url": "https://api.github.com/users/octocat/orgs",
+    "repos_url": "https://api.github.com/users/octocat/repos",
+    "events_url": "https://api.github.com/users/octocat/events{/privacy}",
+    "received_events_url": "https://api.github.com/users/octocat/received_events",
+    "type": "User",
+    "site_admin": false
+  },
+  "html_url": "https://github.com/octocat/Hello-World",
+  "description": "My first repository on GitHub!",
+  "fork": false,
+  "url": "https://api.github.com/repos/octocat/Hello-World",
+  "forks_url": "https://api.github.com/repos/octocat/Hello-World/forks",
+  "keys_url": "https://api.github.com/repos/octocat/Hello-World/keys{/key_id}",
+  "collaborators_url": "https://api.github.com/repos/octocat/Hello-World/collaborators{/collaborator}",
+  "teams_url": "https://api.github.com/repos/octocat/Hello-World/teams",
+  "hooks_url": "https://api.github.com/repos/octocat/Hello-World/hooks",
+  "issue_events_url": "https://api.github.com/repos/octocat/Hello-World/issues/events{/number}",
+  "events_url": "https://api.github.com/repos/octocat/Hello-World/events",
+  "assignees_url": "https://api.github.com/repos/octocat/Hello-World/assignees{/user}",
+  "branches_url": "https://api.github.com/repos/octocat/Hello-World/branches{/branch}",
+  "tags_url": "https://api.github.com/repos/octocat/Hello-World/tags",
+  "blobs_url": "https://api.github.com/repos/octocat/Hello-World/git/blobs{/sha}",
+  "git_tags_url": "https://api.github.com/repos/octocat/Hello-World/git/tags{/sha}",
+  "git_refs_url": "https://api.github.com/repos/octocat/Hello-World/git/refs{/sha}",
+  "trees_url": "https://api.github.com/repos/octocat/Hello-World/git/trees{/sha}",
+  "statuses_url": "https://api.github.com/repos/octocat/Hello-World/statuses/{sha}",
+  "languages_url": "https://api.github.com/repos/octocat/Hello-World/languages",
+  "stargazers_url": "https://api.github.com/repos/octocat/Hello-World/stargazers",
+  "contributors_url": "https://api.github.com/repos/octocat/Hello-World/contributors",
+  "subscribers_url": "https://api.github.com/repos/octocat/Hello-World/subscribers",
+  "subscription_url": "https://api.github.com/repos/octocat/Hello-World/subscription",
+  "commits_url": "https://api.github.com/repos/octocat/Hello-World/commits{/sha}",
+  "git_commits_url": "https://api.github.com/repos/octocat/Hello-World/git/commits{/sha}",
+  "comments_url": "https://api.github.com/repos/octocat/Hello-World/comments{/number}",
+  "issue_comment_url": "https://api.github.com/repos/octocat/Hello-World/issues/comments{/number}",
+  "contents_url": "https://api.github.com/repos/octocat/Hello-World/contents/{+path}",
+  "compare_url": "https://api.github.com/repos/octocat/Hello-World/compare/{base}...{head}",
+  "merges_url": "https://api.github.com/repos/octocat/Hello-World/merges",
+  "archive_url": "https://api.github.com/repos/octocat/Hello-World/{archive_format}{/ref}",
+  "downloads_url": "https://api.github.com/repos/octocat/Hello-World/downloads",
+  "issues_url": "https://api.github.com/repos/octocat/Hello-World/issues{/number}",
+  "pulls_url": "https://api.github.com/repos/octocat/Hello-World/pulls{/number}",
+  "milestones_url": "https://api.github.com/repos/octocat/Hello-World/milestones{/number}",
+  "notifications_url": "https://api.github.com/repos/octocat/Hello-World/notifications{?since,all,participating}",
+  "labels_url": "https://api.github.com/repos/octocat/Hello-World/labels{/name}",
+  "releases_url": "https://api.github.com/repos/octocat/Hello-World/releases{/id}",
+  "deployments_url": "https://api.github.com/repos/octocat/Hello-World/deployments",
+  "created_at": "2011-01-26T19:01:12Z",
+  "updated_at": "2022-02-03T00:06:57Z",
+  "pushed_at": "2022-01-30T18:13:40Z",
+  "git_url": "git://github.com/octocat/Hello-World.git",
+  "ssh_url": "git@github.com:octocat/Hello-World.git",
+  "clone_url": "https://github.com/octocat/Hello-World.git",
+  "svn_url": "https://github.com/octocat/Hello-World",
+  "homepage": "",
+  "size": 1,
+  "stargazers_count": 1764,
+  "watchers_count": 1764,
+  "language": null,
+  "has_issues": true,
+  "has_projects": true,
+  "has_downloads": true,
+  "has_wiki": true,
+  "has_pages": false,
+  "forks_count": 1682,
+  "mirror_url": null,
+  "archived": false,
+  "disabled": false,
+  "open_issues_count": 802,
+  "license": null,
+  "allow_forking": true,
+  "is_template": false,
+  "topics": [],
+  "visibility": "public",
+  "forks": 1682,
+  "open_issues": 802,
+  "watchers": 1764,
+  "default_branch": "master",
+  "permissions": {
+    "admin": false,
+    "maintain": false,
+    "push": false,
+    "triage": false,
+    "pull": true
+  },
+  "temp_clone_token": "",
+  "network_count": 1682,
+  "subscribers_count": 1731
+}
\ No newline at end of file
diff --git a/src/test/resources/org/kohsuke/github/GHEventPayloadTest/wiremock/InstallationCreatedEvent/__files/2-repositories_1296269.json b/src/test/resources/org/kohsuke/github/GHEventPayloadTest/wiremock/InstallationCreatedEvent/__files/2-repositories_1296269.json
new file mode 100644
index 0000000000..8b2db1e11c
--- /dev/null
+++ b/src/test/resources/org/kohsuke/github/GHEventPayloadTest/wiremock/InstallationCreatedEvent/__files/2-repositories_1296269.json
@@ -0,0 +1,103 @@
+{
+  "id": 1296269,
+  "node_id": "MDEwOlJlcG9zaXRvcnkxMjk2MjY5",
+  "name": "Hello-World",
+  "full_name": "octocat/Hello-World",
+  "private": false,
+  "owner": {
+    "login": "octocat",
+    "id": 583231,
+    "node_id": "MDQ6VXNlcjU4MzIzMQ==",
+    "avatar_url": "https://avatars.githubusercontent.com/u/583231?v=4",
+    "gravatar_id": "",
+    "url": "https://api.github.com/users/octocat",
+    "html_url": "https://github.com/octocat",
+    "followers_url": "https://api.github.com/users/octocat/followers",
+    "following_url": "https://api.github.com/users/octocat/following{/other_user}",
+    "gists_url": "https://api.github.com/users/octocat/gists{/gist_id}",
+    "starred_url": "https://api.github.com/users/octocat/starred{/owner}{/repo}",
+    "subscriptions_url": "https://api.github.com/users/octocat/subscriptions",
+    "organizations_url": "https://api.github.com/users/octocat/orgs",
+    "repos_url": "https://api.github.com/users/octocat/repos",
+    "events_url": "https://api.github.com/users/octocat/events{/privacy}",
+    "received_events_url": "https://api.github.com/users/octocat/received_events",
+    "type": "User",
+    "site_admin": false
+  },
+  "html_url": "https://github.com/octocat/Hello-World",
+  "description": "My first repository on GitHub!",
+  "fork": false,
+  "url": "https://api.github.com/repos/octocat/Hello-World",
+  "forks_url": "https://api.github.com/repos/octocat/Hello-World/forks",
+  "keys_url": "https://api.github.com/repos/octocat/Hello-World/keys{/key_id}",
+  "collaborators_url": "https://api.github.com/repos/octocat/Hello-World/collaborators{/collaborator}",
+  "teams_url": "https://api.github.com/repos/octocat/Hello-World/teams",
+  "hooks_url": "https://api.github.com/repos/octocat/Hello-World/hooks",
+  "issue_events_url": "https://api.github.com/repos/octocat/Hello-World/issues/events{/number}",
+  "events_url": "https://api.github.com/repos/octocat/Hello-World/events",
+  "assignees_url": "https://api.github.com/repos/octocat/Hello-World/assignees{/user}",
+  "branches_url": "https://api.github.com/repos/octocat/Hello-World/branches{/branch}",
+  "tags_url": "https://api.github.com/repos/octocat/Hello-World/tags",
+  "blobs_url": "https://api.github.com/repos/octocat/Hello-World/git/blobs{/sha}",
+  "git_tags_url": "https://api.github.com/repos/octocat/Hello-World/git/tags{/sha}",
+  "git_refs_url": "https://api.github.com/repos/octocat/Hello-World/git/refs{/sha}",
+  "trees_url": "https://api.github.com/repos/octocat/Hello-World/git/trees{/sha}",
+  "statuses_url": "https://api.github.com/repos/octocat/Hello-World/statuses/{sha}",
+  "languages_url": "https://api.github.com/repos/octocat/Hello-World/languages",
+  "stargazers_url": "https://api.github.com/repos/octocat/Hello-World/stargazers",
+  "contributors_url": "https://api.github.com/repos/octocat/Hello-World/contributors",
+  "subscribers_url": "https://api.github.com/repos/octocat/Hello-World/subscribers",
+  "subscription_url": "https://api.github.com/repos/octocat/Hello-World/subscription",
+  "commits_url": "https://api.github.com/repos/octocat/Hello-World/commits{/sha}",
+  "git_commits_url": "https://api.github.com/repos/octocat/Hello-World/git/commits{/sha}",
+  "comments_url": "https://api.github.com/repos/octocat/Hello-World/comments{/number}",
+  "issue_comment_url": "https://api.github.com/repos/octocat/Hello-World/issues/comments{/number}",
+  "contents_url": "https://api.github.com/repos/octocat/Hello-World/contents/{+path}",
+  "compare_url": "https://api.github.com/repos/octocat/Hello-World/compare/{base}...{head}",
+  "merges_url": "https://api.github.com/repos/octocat/Hello-World/merges",
+  "archive_url": "https://api.github.com/repos/octocat/Hello-World/{archive_format}{/ref}",
+  "downloads_url": "https://api.github.com/repos/octocat/Hello-World/downloads",
+  "issues_url": "https://api.github.com/repos/octocat/Hello-World/issues{/number}",
+  "pulls_url": "https://api.github.com/repos/octocat/Hello-World/pulls{/number}",
+  "milestones_url": "https://api.github.com/repos/octocat/Hello-World/milestones{/number}",
+  "notifications_url": "https://api.github.com/repos/octocat/Hello-World/notifications{?since,all,participating}",
+  "labels_url": "https://api.github.com/repos/octocat/Hello-World/labels{/name}",
+  "releases_url": "https://api.github.com/repos/octocat/Hello-World/releases{/id}",
+  "deployments_url": "https://api.github.com/repos/octocat/Hello-World/deployments",
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+  "updated_at": "2024-03-13T21:25:44Z",
+  "pushed_at": "2024-03-09T06:28:31Z",
+  "git_url": "git://github.com/octocat/Hello-World.git",
+  "ssh_url": "git@github.com:octocat/Hello-World.git",
+  "clone_url": "https://github.com/octocat/Hello-World.git",
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+}
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diff --git a/src/test/resources/org/kohsuke/github/GHEventPayloadTest/wiremock/InstallationCreatedEvent/mappings/1-r_o_hello-world.json b/src/test/resources/org/kohsuke/github/GHEventPayloadTest/wiremock/InstallationCreatedEvent/mappings/1-r_o_hello-world.json
new file mode 100644
index 0000000000..885e76133f
--- /dev/null
+++ b/src/test/resources/org/kohsuke/github/GHEventPayloadTest/wiremock/InstallationCreatedEvent/mappings/1-r_o_hello-world.json
@@ -0,0 +1,47 @@
+{
+  "id": "825b1b2a-1bcf-4273-9204-54f989479669",
+  "name": "repos_octocat_hello-world",
+  "request": {
+    "url": "/repos/octocat/Hello-World",
+    "method": "GET",
+    "headers": {
+      "Accept": {
+        "equalTo": "application/vnd.github.baptiste-preview+json, application/vnd.github.nebula-preview+json"
+      }
+    }
+  },
+  "response": {
+    "status": 200,
+    "bodyFileName": "1-r_o_hello-world.json",
+    "headers": {
+      "Server": "GitHub.com",
+      "Date": "Thu, 03 Feb 2022 14:07:49 GMT",
+      "Content-Type": "application/json; charset=utf-8",
+      "Cache-Control": "private, max-age=60, s-maxage=60",
+      "Vary": [
+        "Accept, Authorization, Cookie, X-GitHub-OTP",
+        "Accept-Encoding, Accept, X-Requested-With"
+      ],
+      "ETag": "W/\"54ebfbf708e274f11202ea42a54ccb98955c89b119059c79c8f1bf7e76126198\"",
+      "Last-Modified": "Thu, 03 Feb 2022 00:06:57 GMT",
+      "X-OAuth-Scopes": "admin:gpg_key, admin:org, admin:org_hook, admin:public_key, admin:repo_hook, gist, notifications, repo, user, workflow, write:discussion",
+      "X-Accepted-OAuth-Scopes": "repo",
+      "X-GitHub-Media-Type": "github.v3; param=baptiste-preview.nebula-preview; format=json",
+      "X-RateLimit-Limit": "5000",
+      "X-RateLimit-Remaining": "4999",
+      "X-RateLimit-Reset": "1643900869",
+      "X-RateLimit-Used": "1",
+      "X-RateLimit-Resource": "core",
+      "Strict-Transport-Security": "max-age=31536000; includeSubdomains; preload",
+      "X-Frame-Options": "deny",
+      "X-Content-Type-Options": "nosniff",
+      "X-XSS-Protection": "0",
+      "Referrer-Policy": "origin-when-cross-origin, strict-origin-when-cross-origin",
+      "Content-Security-Policy": "default-src 'none'",
+      "X-GitHub-Request-Id": "AD00:CEBF:18E9BF0:19A3623:61FBE1B5"
+    }
+  },
+  "uuid": "825b1b2a-1bcf-4273-9204-54f989479669",
+  "persistent": true,
+  "insertionIndex": 1
+}
\ No newline at end of file
diff --git a/src/test/resources/org/kohsuke/github/GHEventPayloadTest/wiremock/InstallationCreatedEvent/mappings/2-repositories_1296269.json b/src/test/resources/org/kohsuke/github/GHEventPayloadTest/wiremock/InstallationCreatedEvent/mappings/2-repositories_1296269.json
new file mode 100644
index 0000000000..bc21ed64a4
--- /dev/null
+++ b/src/test/resources/org/kohsuke/github/GHEventPayloadTest/wiremock/InstallationCreatedEvent/mappings/2-repositories_1296269.json
@@ -0,0 +1,46 @@
+{
+  "id": "71720657-76be-4371-932d-edc25c1e1972",
+  "name": "repositories_1296269",
+  "request": {
+    "url": "/repositories/1296269",
+    "method": "GET",
+    "headers": {
+      "Accept": {
+        "equalTo": "application/vnd.github.v3+json"
+      }
+    }
+  },
+  "response": {
+    "status": 200,
+    "bodyFileName": "2-repositories_1296269.json",
+    "headers": {
+      "Server": "GitHub.com",
+      "Date": "Thu, 14 Mar 2024 00:05:07 GMT",
+      "Content-Type": "application/json; charset=utf-8",
+      "Cache-Control": "public, max-age=60, s-maxage=60",
+      "Vary": "Accept, Accept-Encoding, Accept, X-Requested-With",
+      "ETag": "W/\"463b3a1acb093fa3ed0bb1f11b4182aa6b7f54a6f613cb6293b24c6150c757f9\"",
+      "Last-Modified": "Wed, 13 Mar 2024 21:25:44 GMT",
+      "X-GitHub-Media-Type": "github.v3; format=json",
+      "x-github-api-version-selected": "2022-11-28",
+      "Access-Control-Expose-Headers": "ETag, Link, Location, Retry-After, X-GitHub-OTP, X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Used, X-RateLimit-Resource, X-RateLimit-Reset, X-OAuth-Scopes, X-Accepted-OAuth-Scopes, X-Poll-Interval, X-GitHub-Media-Type, X-GitHub-SSO, X-GitHub-Request-Id, Deprecation, Sunset",
+      "Access-Control-Allow-Origin": "*",
+      "Strict-Transport-Security": "max-age=31536000; includeSubdomains; preload",
+      "X-Frame-Options": "deny",
+      "X-Content-Type-Options": "nosniff",
+      "X-XSS-Protection": "0",
+      "Referrer-Policy": "origin-when-cross-origin, strict-origin-when-cross-origin",
+      "Content-Security-Policy": "default-src 'none'",
+      "X-RateLimit-Limit": "60",
+      "X-RateLimit-Remaining": "59",
+      "X-RateLimit-Reset": "1710378307",
+      "X-RateLimit-Resource": "core",
+      "X-RateLimit-Used": "1",
+      "Accept-Ranges": "bytes",
+      "X-GitHub-Request-Id": "D434:1950C9:DD1F3:134998:65F23F32"
+    }
+  },
+  "uuid": "71720657-76be-4371-932d-edc25c1e1972",
+  "persistent": true,
+  "insertionIndex": 2
+}
\ No newline at end of file
diff --git a/src/test/resources/org/kohsuke/github/GHEventPayloadTest/wiremock/InstallationDeletedEvent/__files/repos_octocat_hello-world-1.json b/src/test/resources/org/kohsuke/github/GHEventPayloadTest/wiremock/InstallationDeletedEvent/__files/repos_octocat_hello-world-1.json
new file mode 100644
index 0000000000..fd3c1ce7ca
--- /dev/null
+++ b/src/test/resources/org/kohsuke/github/GHEventPayloadTest/wiremock/InstallationDeletedEvent/__files/repos_octocat_hello-world-1.json
@@ -0,0 +1,108 @@
+{
+  "id": 1296269,
+  "node_id": "MDEwOlJlcG9zaXRvcnkxMjk2MjY5",
+  "name": "Hello-World",
+  "full_name": "octocat/Hello-World",
+  "private": false,
+  "owner": {
+    "login": "octocat",
+    "id": 583231,
+    "node_id": "MDQ6VXNlcjU4MzIzMQ==",
+    "avatar_url": "https://avatars.githubusercontent.com/u/583231?v=4",
+    "gravatar_id": "",
+    "url": "https://api.github.com/users/octocat",
+    "html_url": "https://github.com/octocat",
+    "followers_url": "https://api.github.com/users/octocat/followers",
+    "following_url": "https://api.github.com/users/octocat/following{/other_user}",
+    "gists_url": "https://api.github.com/users/octocat/gists{/gist_id}",
+    "starred_url": "https://api.github.com/users/octocat/starred{/owner}{/repo}",
+    "subscriptions_url": "https://api.github.com/users/octocat/subscriptions",
+    "organizations_url": "https://api.github.com/users/octocat/orgs",
+    "repos_url": "https://api.github.com/users/octocat/repos",
+    "events_url": "https://api.github.com/users/octocat/events{/privacy}",
+    "received_events_url": "https://api.github.com/users/octocat/received_events",
+    "type": "User",
+    "site_admin": false
+  },
+  "html_url": "https://github.com/octocat/Hello-World",
+  "description": "My first repository on GitHub!",
+  "fork": false,
+  "url": "https://api.github.com/repos/octocat/Hello-World",
+  "forks_url": "https://api.github.com/repos/octocat/Hello-World/forks",
+  "keys_url": "https://api.github.com/repos/octocat/Hello-World/keys{/key_id}",
+  "collaborators_url": "https://api.github.com/repos/octocat/Hello-World/collaborators{/collaborator}",
+  "teams_url": "https://api.github.com/repos/octocat/Hello-World/teams",
+  "hooks_url": "https://api.github.com/repos/octocat/Hello-World/hooks",
+  "issue_events_url": "https://api.github.com/repos/octocat/Hello-World/issues/events{/number}",
+  "events_url": "https://api.github.com/repos/octocat/Hello-World/events",
+  "assignees_url": "https://api.github.com/repos/octocat/Hello-World/assignees{/user}",
+  "branches_url": "https://api.github.com/repos/octocat/Hello-World/branches{/branch}",
+  "tags_url": "https://api.github.com/repos/octocat/Hello-World/tags",
+  "blobs_url": "https://api.github.com/repos/octocat/Hello-World/git/blobs{/sha}",
+  "git_tags_url": "https://api.github.com/repos/octocat/Hello-World/git/tags{/sha}",
+  "git_refs_url": "https://api.github.com/repos/octocat/Hello-World/git/refs{/sha}",
+  "trees_url": "https://api.github.com/repos/octocat/Hello-World/git/trees{/sha}",
+  "statuses_url": "https://api.github.com/repos/octocat/Hello-World/statuses/{sha}",
+  "languages_url": "https://api.github.com/repos/octocat/Hello-World/languages",
+  "stargazers_url": "https://api.github.com/repos/octocat/Hello-World/stargazers",
+  "contributors_url": "https://api.github.com/repos/octocat/Hello-World/contributors",
+  "subscribers_url": "https://api.github.com/repos/octocat/Hello-World/subscribers",
+  "subscription_url": "https://api.github.com/repos/octocat/Hello-World/subscription",
+  "commits_url": "https://api.github.com/repos/octocat/Hello-World/commits{/sha}",
+  "git_commits_url": "https://api.github.com/repos/octocat/Hello-World/git/commits{/sha}",
+  "comments_url": "https://api.github.com/repos/octocat/Hello-World/comments{/number}",
+  "issue_comment_url": "https://api.github.com/repos/octocat/Hello-World/issues/comments{/number}",
+  "contents_url": "https://api.github.com/repos/octocat/Hello-World/contents/{+path}",
+  "compare_url": "https://api.github.com/repos/octocat/Hello-World/compare/{base}...{head}",
+  "merges_url": "https://api.github.com/repos/octocat/Hello-World/merges",
+  "archive_url": "https://api.github.com/repos/octocat/Hello-World/{archive_format}{/ref}",
+  "downloads_url": "https://api.github.com/repos/octocat/Hello-World/downloads",
+  "issues_url": "https://api.github.com/repos/octocat/Hello-World/issues{/number}",
+  "pulls_url": "https://api.github.com/repos/octocat/Hello-World/pulls{/number}",
+  "milestones_url": "https://api.github.com/repos/octocat/Hello-World/milestones{/number}",
+  "notifications_url": "https://api.github.com/repos/octocat/Hello-World/notifications{?since,all,participating}",
+  "labels_url": "https://api.github.com/repos/octocat/Hello-World/labels{/name}",
+  "releases_url": "https://api.github.com/repos/octocat/Hello-World/releases{/id}",
+  "deployments_url": "https://api.github.com/repos/octocat/Hello-World/deployments",
+  "created_at": "2011-01-26T19:01:12Z",
+  "updated_at": "2022-02-03T00:06:57Z",
+  "pushed_at": "2022-01-30T18:13:40Z",
+  "git_url": "git://github.com/octocat/Hello-World.git",
+  "ssh_url": "git@github.com:octocat/Hello-World.git",
+  "clone_url": "https://github.com/octocat/Hello-World.git",
+  "svn_url": "https://github.com/octocat/Hello-World",
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+  "has_issues": true,
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+  "has_downloads": true,
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+  "has_pages": false,
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+  "license": null,
+  "allow_forking": true,
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+  "topics": [],
+  "visibility": "public",
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+  "watchers": 1764,
+  "default_branch": "master",
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+    "maintain": false,
+    "push": false,
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+    "pull": true
+  },
+  "temp_clone_token": "",
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+}
\ No newline at end of file
diff --git a/src/test/resources/org/kohsuke/github/GHEventPayloadTest/wiremock/InstallationDeletedEvent/__files/users_octocat-2.json b/src/test/resources/org/kohsuke/github/GHEventPayloadTest/wiremock/InstallationDeletedEvent/__files/users_octocat-2.json
new file mode 100644
index 0000000000..2652766fa8
--- /dev/null
+++ b/src/test/resources/org/kohsuke/github/GHEventPayloadTest/wiremock/InstallationDeletedEvent/__files/users_octocat-2.json
@@ -0,0 +1,34 @@
+{
+  "login": "octocat",
+  "id": 583231,
+  "node_id": "MDQ6VXNlcjU4MzIzMQ==",
+  "avatar_url": "https://avatars.githubusercontent.com/u/583231?v=4",
+  "gravatar_id": "",
+  "url": "https://api.github.com/users/octocat",
+  "html_url": "https://github.com/octocat",
+  "followers_url": "https://api.github.com/users/octocat/followers",
+  "following_url": "https://api.github.com/users/octocat/following{/other_user}",
+  "gists_url": "https://api.github.com/users/octocat/gists{/gist_id}",
+  "starred_url": "https://api.github.com/users/octocat/starred{/owner}{/repo}",
+  "subscriptions_url": "https://api.github.com/users/octocat/subscriptions",
+  "organizations_url": "https://api.github.com/users/octocat/orgs",
+  "repos_url": "https://api.github.com/users/octocat/repos",
+  "events_url": "https://api.github.com/users/octocat/events{/privacy}",
+  "received_events_url": "https://api.github.com/users/octocat/received_events",
+  "type": "User",
+  "site_admin": false,
+  "name": "The Octocat",
+  "company": "@github",
+  "blog": "https://github.blog",
+  "location": "San Francisco",
+  "email": "octocat@github.com",
+  "hireable": null,
+  "bio": null,
+  "twitter_username": null,
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+  "public_gists": 8,
+  "followers": 4752,
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+  "created_at": "2011-01-25T18:44:36Z",
+  "updated_at": "2022-01-24T15:08:43Z"
+}
\ No newline at end of file
diff --git a/src/test/resources/org/kohsuke/github/GHEventPayloadTest/wiremock/InstallationDeletedEvent/mappings/repos_octocat_hello-world-1.json b/src/test/resources/org/kohsuke/github/GHEventPayloadTest/wiremock/InstallationDeletedEvent/mappings/repos_octocat_hello-world-1.json
new file mode 100644
index 0000000000..942435fa56
--- /dev/null
+++ b/src/test/resources/org/kohsuke/github/GHEventPayloadTest/wiremock/InstallationDeletedEvent/mappings/repos_octocat_hello-world-1.json
@@ -0,0 +1,47 @@
+{
+  "id": "825b1b2a-1bcf-4273-9204-54f989479669",
+  "name": "repos_octocat_hello-world",
+  "request": {
+    "url": "/repos/octocat/Hello-World",
+    "method": "GET",
+    "headers": {
+      "Accept": {
+        "equalTo": "application/vnd.github.baptiste-preview+json, application/vnd.github.nebula-preview+json"
+      }
+    }
+  },
+  "response": {
+    "status": 200,
+    "bodyFileName": "repos_octocat_hello-world-1.json",
+    "headers": {
+      "Server": "GitHub.com",
+      "Date": "Thu, 03 Feb 2022 14:07:49 GMT",
+      "Content-Type": "application/json; charset=utf-8",
+      "Cache-Control": "private, max-age=60, s-maxage=60",
+      "Vary": [
+        "Accept, Authorization, Cookie, X-GitHub-OTP",
+        "Accept-Encoding, Accept, X-Requested-With"
+      ],
+      "ETag": "W/\"54ebfbf708e274f11202ea42a54ccb98955c89b119059c79c8f1bf7e76126198\"",
+      "Last-Modified": "Thu, 03 Feb 2022 00:06:57 GMT",
+      "X-OAuth-Scopes": "admin:gpg_key, admin:org, admin:org_hook, admin:public_key, admin:repo_hook, gist, notifications, repo, user, workflow, write:discussion",
+      "X-Accepted-OAuth-Scopes": "repo",
+      "X-GitHub-Media-Type": "github.v3; param=baptiste-preview.nebula-preview; format=json",
+      "X-RateLimit-Limit": "5000",
+      "X-RateLimit-Remaining": "4999",
+      "X-RateLimit-Reset": "1643900869",
+      "X-RateLimit-Used": "1",
+      "X-RateLimit-Resource": "core",
+      "Strict-Transport-Security": "max-age=31536000; includeSubdomains; preload",
+      "X-Frame-Options": "deny",
+      "X-Content-Type-Options": "nosniff",
+      "X-XSS-Protection": "0",
+      "Referrer-Policy": "origin-when-cross-origin, strict-origin-when-cross-origin",
+      "Content-Security-Policy": "default-src 'none'",
+      "X-GitHub-Request-Id": "AD00:CEBF:18E9BF0:19A3623:61FBE1B5"
+    }
+  },
+  "uuid": "825b1b2a-1bcf-4273-9204-54f989479669",
+  "persistent": true,
+  "insertionIndex": 1
+}
\ No newline at end of file
diff --git a/src/test/resources/org/kohsuke/github/GHEventPayloadTest/wiremock/InstallationDeletedEvent/mappings/users_octocat-2.json b/src/test/resources/org/kohsuke/github/GHEventPayloadTest/wiremock/InstallationDeletedEvent/mappings/users_octocat-2.json
new file mode 100644
index 0000000000..3a64fa2112
--- /dev/null
+++ b/src/test/resources/org/kohsuke/github/GHEventPayloadTest/wiremock/InstallationDeletedEvent/mappings/users_octocat-2.json
@@ -0,0 +1,47 @@
+{
+  "id": "a801936f-7ec1-4f5a-8e1a-999cff08aec8",
+  "name": "users_octocat",
+  "request": {
+    "url": "/users/octocat",
+    "method": "GET",
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