diff --git a/pkgs/by-name/zl/zlib-ng/package.nix b/pkgs/by-name/zl/zlib-ng/package.nix
index 49d82469abd2..6d813b919db7 100644
--- a/pkgs/by-name/zl/zlib-ng/package.nix
+++ b/pkgs/by-name/zl/zlib-ng/package.nix
@@ -10,13 +10,13 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "zlib-ng";
-  version = "2.3.2";
+  version = "2.3.3";
 
   src = fetchFromGitHub {
     owner = "zlib-ng";
     repo = "zlib-ng";
     rev = finalAttrs.version;
-    hash = "sha256-lO6fO18Z74+wKF0O/JjfrhS8lyaNQ37eamWGThb39F8=";
+    hash = "sha256-6GlHCnx9dQtmViPnvHnMS+l9Z+g6M8ynrSxLhLtmAKU=";
   };
 
   outputs = [