diff --git a/Makefile b/Makefile
index 8ef8b782e..ed5bb267e 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 # Edit this release and run "make release"
-RELEASE=2.5.2
+RELEASE=2.5.3
 
 SHELL=/bin/bash
 
diff --git a/debian/changelog b/debian/changelog
index 82e2a71a1..a718f7c77 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,12 @@
+tron (2.5.3) jammy; urgency=medium
+
+  * 2.5.3 tagged with 'make release'
+    Commit: Merge pull request #1000 from Yelp/jfong/TRON-2208-
+    nonretryable-to-unknown  TRON-2208: Update non_retryable_exit_code
+    behavior to treat as UNKNOWN
+
+ -- Jen Patague <jfong@yelp.com>  Mon, 30 Sep 2024 14:12:37 -0700
+
 tron (2.5.2) jammy; urgency=medium
 
   * 2.5.2 tagged with 'make release'
diff --git a/tron/__init__.py b/tron/__init__.py
index eaf1d70a1..136cef86f 100644
--- a/tron/__init__.py
+++ b/tron/__init__.py
@@ -17,4 +17,4 @@
 # setup phase, the dependencies may not exist on disk yet.
 #
 # Don't bump version manually. See `make release` docs in ./Makefile
-__version__ = "2.5.2"
+__version__ = "2.5.3"