diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index a1fc30168185..1a1bceaa54c3 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -609,7 +609,7 @@
   "google-cloud-workflows-v1beta+FILLER": "0.0.0",
   "google-iam-credentials": "1.0.3",
   "google-iam-credentials+FILLER": "0.0.0",
-  "google-iam-credentials-v1": "0.3.5",
+  "google-iam-credentials-v1": "0.4.0",
   "google-iam-credentials-v1+FILLER": "0.0.0",
   "google-iam-v1": "0.2.0",
   "google-iam-v1+FILLER": "0.0.0",
diff --git a/google-iam-credentials-v1/CHANGELOG.md b/google-iam-credentials-v1/CHANGELOG.md
index 218e1ef515c1..d47c44557eb1 100644
--- a/google-iam-credentials-v1/CHANGELOG.md
+++ b/google-iam-credentials-v1/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Release History
 
+### 0.4.0 (2022-07-08)
+
+#### Features
+
+* Updated minimum Ruby version to 2.6 ([#18443](https://github.com/googleapis/google-cloud-ruby/issues/18443)) 
+
 ### 0.3.5 / 2022-01-11
 
 #### Documentation
diff --git a/google-iam-credentials-v1/lib/google/iam/credentials/v1/version.rb b/google-iam-credentials-v1/lib/google/iam/credentials/v1/version.rb
index 5d66f7a8d914..c297843e113d 100644
--- a/google-iam-credentials-v1/lib/google/iam/credentials/v1/version.rb
+++ b/google-iam-credentials-v1/lib/google/iam/credentials/v1/version.rb
@@ -21,7 +21,7 @@ module Google
   module Iam
     module Credentials
       module V1
-        VERSION = "0.3.5"
+        VERSION = "0.4.0"
       end
     end
   end
diff --git a/google-iam-credentials-v1/snippets/snippet_metadata_google.iam.credentials.v1.json b/google-iam-credentials-v1/snippets/snippet_metadata_google.iam.credentials.v1.json
index 2af8e5cf1055..451e84e6caa3 100644
--- a/google-iam-credentials-v1/snippets/snippet_metadata_google.iam.credentials.v1.json
+++ b/google-iam-credentials-v1/snippets/snippet_metadata_google.iam.credentials.v1.json
@@ -1,7 +1,7 @@
 {
   "client_library": {
     "name": "google-iam-credentials-v1",
-    "version": "0.3.5",
+    "version": "0.4.0",
     "language": "RUBY",
     "apis": [
       {