diff --git a/README.md b/README.md
index 48c3d28..9375874 100644
--- a/README.md
+++ b/README.md
@@ -88,3 +88,13 @@ When you reach a point where you'd like to update your labels and regular expres
 Set `versioned-regex` to any valid regular expression that should be used to capture the version number from the issue. The first match will be used should multiple be found.
 
 Set `body-missing-regex-label` to the name of the label that should be added to an issue where the specified `version-regex` can't be found. This is useful for when your users accidentally delete this value. Leave this blank if you don't want to use this functionality.
+
+### Pull request support
+
+The labeler action is also available for pull requests. Make sure the workflow is triggered by pull requests.
+
+```
+on:
+  pull_requests:
+    types: [opened, edited]
+```
diff --git a/lib/main.js b/lib/main.js
index 503a2f6..6c62756 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -1,4 +1,23 @@
 "use strict";
+var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
+}) : (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    o[k2] = m[k];
+}));
+var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
+    Object.defineProperty(o, "default", { enumerable: true, value: v });
+}) : function(o, v) {
+    o["default"] = v;
+});
+var __importStar = (this && this.__importStar) || function (mod) {
+    if (mod && mod.__esModule) return mod;
+    var result = {};
+    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
+    __setModuleDefault(result, mod);
+    return result;
+};
 var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
     function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
     return new (P || (P = Promise))(function (resolve, reject) {
@@ -8,13 +27,6 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, ge
         step((generator = generator.apply(thisArg, _arguments || [])).next());
     });
 };
-var __importStar = (this && this.__importStar) || function (mod) {
-    if (mod && mod.__esModule) return mod;
-    var result = {};
-    if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];
-    result["default"] = mod;
-    return result;
-};
 Object.defineProperty(exports, "__esModule", { value: true });
 const core = __importStar(require("@actions/core"));
 const github = __importStar(require("@actions/github"));
@@ -28,11 +40,15 @@ function run() {
             const enableVersionedRegex = parseInt(core.getInput('enable-versioned-regex', { required: true }));
             const versionedRegex = new RegExp(core.getInput('versioned-regex', { required: false }));
             const notBefore = Date.parse(core.getInput('not-before', { required: false }));
-            const bodyMissingRexexLabel = core.getInput('body-missing-regex-label', { required: false });
-            const issue_number = getIssueNumber();
-            const issue_body = getIssueBody();
-            if (!issue_number || !issue_body) {
-                console.log('Could not get issue number or issue body from context, exiting');
+            const bodyMissingRegexLabel = core.getInput('body-missing-regex-label', { required: false });
+            const issue_number = getIssueOrPullRequestNumber();
+            if (issue_number === undefined) {
+                console.log('Could not get issue or pull request number from context, exiting');
+                return;
+            }
+            const issue_body = getIssueOrPullRequestBody();
+            if (issue_body === undefined) {
+                console.log('Could not get issue or pull request body from context, exiting');
                 return;
             }
             // A client to load data from GitHub
@@ -42,15 +58,15 @@ function run() {
             if (enableVersionedRegex == 1) {
                 const regexVersion = versionedRegex.exec(issue_body);
                 if (!regexVersion || !regexVersion[1]) {
-                    if (bodyMissingRexexLabel) {
-                        addLabels(client, issue_number, [bodyMissingRexexLabel]);
+                    if (bodyMissingRegexLabel) {
+                        addLabels(client, issue_number, [bodyMissingRegexLabel]);
                     }
                     console.log(`Issue #${issue_number} does not contain regex version in the body of the issue, exiting.`);
                     return 0;
                 }
                 else {
-                    if (bodyMissingRexexLabel) {
-                        removeLabelItems.push(bodyMissingRexexLabel);
+                    if (bodyMissingRegexLabel) {
+                        removeLabelItems.push(bodyMissingRegexLabel);
                     }
                 }
                 configPath = regexifyConfigPath(configPath, regexVersion[1]);
@@ -93,19 +109,27 @@ function run() {
         }
     });
 }
-function getIssueNumber() {
+function getIssueOrPullRequestNumber() {
     const issue = github.context.payload.issue;
-    if (!issue) {
-        return;
+    if (issue) {
+        return issue.number;
+    }
+    const pull_request = github.context.payload.pull_request;
+    if (pull_request) {
+        return pull_request.number;
     }
-    return issue.number;
+    return;
 }
-function getIssueBody() {
+function getIssueOrPullRequestBody() {
     const issue = github.context.payload.issue;
-    if (!issue) {
-        return;
+    if (issue) {
+        return issue.body;
+    }
+    const pull_request = github.context.payload.pull_request;
+    if (pull_request) {
+        return pull_request.body;
     }
-    return issue.body;
+    return;
 }
 function regexifyConfigPath(configPath, version) {
     var lastIndex = configPath.lastIndexOf('.');
diff --git a/src/main.ts b/src/main.ts
index 27e167a..5a1470f 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -11,11 +11,15 @@ async function run() {
     const versionedRegex = new RegExp(core.getInput('versioned-regex', { required: false }));
     const notBefore = Date.parse(core.getInput('not-before', { required: false }));
     const bodyMissingRegexLabel = core.getInput('body-missing-regex-label', { required: false });
-    const issue_number = getIssueNumber();
-    const issue_body = getIssueBody();
+    const issue_number = getIssueOrPullRequestNumber();
+    if (issue_number === undefined) {
+      console.log('Could not get issue or pull request number from context, exiting');
+      return;
+    }
 
-    if (issue_number === undefined || issue_body === undefined) {
-      console.log('Could not get issue number or issue body from context, exiting');
+    const issue_body = getIssueOrPullRequestBody();
+    if (issue_body === undefined) {
+      console.log('Could not get issue or pull request body from context, exiting');
       return;
     }
 
@@ -86,22 +90,32 @@ async function run() {
   }
 }
 
-function getIssueNumber(): number | undefined {
+function getIssueOrPullRequestNumber(): number | undefined {
   const issue = github.context.payload.issue;
-  if (!issue) {
-    return;
+  if (issue) {
+    return issue.number;
+  }
+
+  const pull_request = github.context.payload.pull_request;
+  if (pull_request) {
+    return pull_request.number;
   }
 
-  return issue.number;
+  return;
 }
 
-function getIssueBody(): string | undefined {
+function getIssueOrPullRequestBody(): string | undefined {
   const issue = github.context.payload.issue;
-  if (!issue) {
-    return;
+  if (issue) {
+    return issue.body;
+  }
+
+  const pull_request = github.context.payload.pull_request;
+  if (pull_request) {
+    return pull_request.body;
   }
 
-  return issue.body;
+  return;
 }
 
 function regexifyConfigPath(configPath: string, version: string) {