diff --git a/CHANGELOG.md b/CHANGELOG.md
index 821ea4a..2319313 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 2025-05-28
+### Added
+- Updated default [`version`](https://github.com/overleaf/toolkit/blob/master/lib/config-seed/version) to `5.5.1`.
+- 
 ## 2025-05-28
 ### Added
 - Updated default [`version`](https://github.com/overleaf/toolkit/blob/master/lib/config-seed/version) to `5.5.0`.
diff --git a/lib/config-seed/version b/lib/config-seed/version
index d50359d..7acd1cb 100644
--- a/lib/config-seed/version
+++ b/lib/config-seed/version
@@ -1 +1 @@
-5.5.0
+5.5.1