diff --git a/generated/google-apis-iamcredentials_v1/CHANGELOG.md b/generated/google-apis-iamcredentials_v1/CHANGELOG.md
index a68b8d7eaa0..ad29ca8226c 100644
--- a/generated/google-apis-iamcredentials_v1/CHANGELOG.md
+++ b/generated/google-apis-iamcredentials_v1/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Release history for google-apis-iamcredentials_v1
 
+### v0.21.0 (2024-05-19)
+
+* Regenerated using generator version 0.15.0
+
 ### v0.20.0 (2024-03-10)
 
 * Regenerated from discovery document revision 20240227
diff --git a/generated/google-apis-iamcredentials_v1/google-apis-iamcredentials_v1.gemspec b/generated/google-apis-iamcredentials_v1/google-apis-iamcredentials_v1.gemspec
index 0b80b62dbc7..8b2819452f0 100644
--- a/generated/google-apis-iamcredentials_v1/google-apis-iamcredentials_v1.gemspec
+++ b/generated/google-apis-iamcredentials_v1/google-apis-iamcredentials_v1.gemspec
@@ -29,5 +29,5 @@ Gem::Specification.new do |gem|
   gem.require_paths = ["lib"]
 
   gem.required_ruby_version = '>= 2.7'
-  gem.add_runtime_dependency "google-apis-core", ">= 0.14.0", "< 2.a"
+  gem.add_runtime_dependency "google-apis-core", ">= 0.15.0", "< 2.a"
 end
diff --git a/generated/google-apis-iamcredentials_v1/lib/google/apis/iamcredentials_v1/gem_version.rb b/generated/google-apis-iamcredentials_v1/lib/google/apis/iamcredentials_v1/gem_version.rb
index 5cb851ddad5..ad2138b3c68 100644
--- a/generated/google-apis-iamcredentials_v1/lib/google/apis/iamcredentials_v1/gem_version.rb
+++ b/generated/google-apis-iamcredentials_v1/lib/google/apis/iamcredentials_v1/gem_version.rb
@@ -16,10 +16,10 @@ module Google
   module Apis
     module IamcredentialsV1
       # Version of the google-apis-iamcredentials_v1 gem
-      GEM_VERSION = "0.20.0"
+      GEM_VERSION = "0.21.0"
 
       # Version of the code generator used to generate this client
-      GENERATOR_VERSION = "0.14.0"
+      GENERATOR_VERSION = "0.15.0"
 
       # Revision of the discovery document this client was generated from
       REVISION = "20240227"