diff --git a/pkgs/development/libraries/zlib-ng/default.nix b/pkgs/development/libraries/zlib-ng/default.nix
index 6eaf9f84c6e8..c4d2aa2c5334 100644
--- a/pkgs/development/libraries/zlib-ng/default.nix
+++ b/pkgs/development/libraries/zlib-ng/default.nix
@@ -5,13 +5,13 @@
 
 stdenv.mkDerivation rec {
   pname = "zlib-ng";
-  version = "2.1.5";
+  version = "2.1.6";
 
   src = fetchFromGitHub {
     owner = "zlib-ng";
     repo = "zlib-ng";
     rev = version;
-    hash = "sha256-EIAeRpmPFodbqQfMOFuGq7cZOnfR9xg8KN+5xa7e9J8=";
+    hash = "sha256-Auu7DS4qNm9/8t/nCjEJBaXfPPxA18oZr2qqybVY4Es=";
   };
 
   outputs = [ "out" "dev" "bin" ];