diff --git a/CHANGELOG.md b/CHANGELOG.md
index a853dd3c..07efbf7c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Pending
 
+## [3.5.3] 2026-02-12
+- Update core agent version to v1.5.1
+  - Adds SQL scrubbing for IN queries containing many arguments
+
 ## [3.5.2] 2025-12-15
 ### Changed
 - Update deprecated macos-13 runner image
diff --git a/setup.py b/setup.py
index cd60404f..8bd53ea9 100644
--- a/setup.py
+++ b/setup.py
@@ -33,7 +33,7 @@
 
 setup(
     name="scout_apm",
-    version="3.5.2",
+    version="3.5.3",
     description="Scout Application Performance Monitoring Agent",
     long_description=long_description,
     long_description_content_type="text/markdown",