diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 29379724..4c313f93 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.3.11"
+  ".": "1.4.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5d732fde..a60a5e79 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [1.4.0](https://github.com/TPTBusiness/Predix/compare/v1.3.11...v1.4.0) (2026-05-01)
+
+
+### Features
+
+* **optimizer:** add max_positions parameter to Optuna search space ([fdb4be3](https://github.com/TPTBusiness/Predix/commit/fdb4be3b3ebd93325e7821f4251148424184a40d))
+
 ## [1.3.11](https://github.com/TPTBusiness/Predix/compare/v1.3.10...v1.3.11) (2026-05-01)