diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 13f053a..3a7e479 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.5.20"
+  ".": "0.5.21"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 83ddf9e..19c5a04 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.5.21](https://github.com/open-feature/flagd-testbed/compare/v0.5.20...v0.5.21) (2025-01-03)
+
+
+### Features
+
+* unix socket image ([#176](https://github.com/open-feature/flagd-testbed/issues/176)) ([a31c7d9](https://github.com/open-feature/flagd-testbed/commit/a31c7d900fa22d3a5abd863d9758565946775d95))
+
 ## [0.5.20](https://github.com/open-feature/flagd-testbed/compare/v0.5.19...v0.5.20) (2024-12-25)
 
 
diff --git a/version.txt b/version.txt
index 5025832..72cb868 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-0.5.20
+0.5.21