diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index da59f99..3e2bf49 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.4.0"
+  ".": "0.4.1"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 59d324d..b892fe3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.4.1](https://github.com/open-feature/ruby-sdk/compare/v0.4.0...v0.4.1) (2025-10-08)
+
+
+### Features
+
+* Add runtime type validation for default values in flag evaluation methods ([#194](https://github.com/open-feature/ruby-sdk/issues/194)) ([dc56c76](https://github.com/open-feature/ruby-sdk/commit/dc56c76f987c16b22a284513b7d0f383d38a0198))
+
 ## [0.4.0](https://github.com/open-feature/ruby-sdk/compare/v0.3.1...v0.4.0) (2024-06-13)
 
 
diff --git a/Gemfile.lock b/Gemfile.lock
index d478e7b..6e74821 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    openfeature-sdk (0.4.0)
+    openfeature-sdk (0.4.1)
 
 GEM
   remote: https://rubygems.org/
diff --git a/lib/open_feature/sdk/version.rb b/lib/open_feature/sdk/version.rb
index dd46f23..0a9b519 100644
--- a/lib/open_feature/sdk/version.rb
+++ b/lib/open_feature/sdk/version.rb
@@ -2,6 +2,6 @@
 
 module OpenFeature
   module SDK
-    VERSION = "0.4.0"
+    VERSION = "0.4.1"
   end
 end