diff --git a/pkgs/development/libraries/minizip-ng/default.nix b/pkgs/development/libraries/minizip-ng/default.nix
index 9f76e213c56f7..9be33beff60e5 100644
--- a/pkgs/development/libraries/minizip-ng/default.nix
+++ b/pkgs/development/libraries/minizip-ng/default.nix
@@ -14,13 +14,13 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "minizip-ng";
-  version = "3.0.10";
+  version = "4.0.0";
 
   src = fetchFromGitHub {
     owner = "zlib-ng";
     repo = finalAttrs.pname;
     rev = finalAttrs.version;
-    sha256 = "sha256-ynYAWF570S6MpD1WXbUC3cu+chL3+AhsMHr15l+LYVg=";
+    sha256 = "sha256-YgBOsznV1JtnpLUJeqZ06zvdB3tNbOlFhhLd1pMJhEM=";
   };
 
   nativeBuildInputs = [ cmake pkg-config ];
diff --git a/pkgs/development/libraries/zlib-ng/default.nix b/pkgs/development/libraries/zlib-ng/default.nix
index 482aa11d0b1b7..ac314b754513e 100644
--- a/pkgs/development/libraries/zlib-ng/default.nix
+++ b/pkgs/development/libraries/zlib-ng/default.nix
@@ -1,22 +1,29 @@
-{ lib, stdenv, fetchFromGitHub
-, cmake, pkg-config
+{ lib, stdenv, fetchFromGitHub, fetchpatch
+, cmake, pkg-config, gtest
 , withZlibCompat ? false
 }:
 
 stdenv.mkDerivation rec {
   pname = "zlib-ng";
-  version = "2.0.7";
+  version = "2.1.2";
 
   src = fetchFromGitHub {
     owner = "zlib-ng";
     repo = "zlib-ng";
     rev = version;
-    sha256 = "sha256-Q+u71XXfHafmTL8tmk4XcgpbSdBIunveL9Q78LqiZF0=";
+    sha256 = "sha256-6IEH9IQsBiNwfAZAemmP0/p6CTOzxEKyekciuH6pLhw=";
   };
 
+  patches = [
+    (fetchpatch {
+      url = "https://patch-diff.githubusercontent.com/raw/zlib-ng/zlib-ng/pull/1519.patch";
+      hash = "sha256-itobS8kJ2Hj3RfjslVkvEVdQ4t5eeIrsA9muRZt03pE=";
+    })
+  ];
+
   outputs = [ "out" "dev" "bin" ];
 
-  nativeBuildInputs = [ cmake pkg-config ];
+  nativeBuildInputs = [ cmake pkg-config gtest ];
 
   cmakeFlags = [
     "-DCMAKE_INSTALL_PREFIX=/"