diff --git a/CHANGELOG.md b/CHANGELOG.md
index bdbc7b43..96d57df8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+# Release (2024-08-14)
+
+## Module Highlights
+* `github.com/aws/smithy-go`: v1.20.4
+  * **Dependency Update**: Bump minimum Go version to 1.21.
+
 # Release (2024-06-27)
 
 ## Module Highlights
diff --git a/go_module_metadata.go b/go_module_metadata.go
index f82b7672..33355b22 100644
--- a/go_module_metadata.go
+++ b/go_module_metadata.go
@@ -3,4 +3,4 @@
 package smithy
 
 // goModuleVersion is the tagged release for this module
-const goModuleVersion = "1.20.3"
+const goModuleVersion = "1.20.4"