diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 6357ca6..8512241 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -9,6 +9,7 @@ Changelog
 
 version 1.0.1-dev
 -----------------
++ Updated bundled zlib-ng to 2.3.3.
 + Wheels are now built for Windows arm64 architectures.
 
 version 1.0.0
diff --git a/src/zlib_ng/zlib-ng b/src/zlib_ng/zlib-ng
index 4254390..1273109 160000
--- a/src/zlib_ng/zlib-ng
+++ b/src/zlib_ng/zlib-ng
@@ -1 +1 @@
-Subproject commit 425439062b114a0f6cf625022c41d929c7e879f9
+Subproject commit 12731092979c6d07f42da27da673a9f6c7b13586