diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 6a704b6c1a6..0e0d6b78310 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1 +1 @@
-{".":"5.1.0","packages/phoenix-evals":"0.16.1","packages/phoenix-otel":"0.5.1"}
+{".":"5.1.1","packages/phoenix-evals":"0.16.1","packages/phoenix-otel":"0.5.1"}
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7217734c243..31c20082c1b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [5.1.1](https://github.com/Arize-ai/phoenix/compare/arize-phoenix-v5.1.0...arize-phoenix-v5.1.1) (2024-09-29)
+
+
+### Bug Fixes
+
+* replace hdbscan with fast-hdbscan ([7e34b37](https://github.com/Arize-ai/phoenix/commit/7e34b37b7d86e1a93c9fad2d41c5a3bd64a04876))
+
 ## [5.1.0](https://github.com/Arize-ai/phoenix/compare/arize-phoenix-v5.0.0...arize-phoenix-v5.1.0) (2024-09-27)
 
 
diff --git a/src/phoenix/version.py b/src/phoenix/version.py
index 0d72820f3e7..a9c316e20d6 100644
--- a/src/phoenix/version.py
+++ b/src/phoenix/version.py
@@ -1 +1 @@
-__version__ = "5.1.0"
+__version__ = "5.1.1"