diff --git a/pkgs/development/libraries/libpng/default.nix b/pkgs/development/libraries/libpng/default.nix
index a20bc7e5f3c5..8c6e1c4af15a 100644
--- a/pkgs/development/libraries/libpng/default.nix
+++ b/pkgs/development/libraries/libpng/default.nix
@@ -3,10 +3,12 @@
 assert zlib != null;
 
 let
-  version = "1.6.26";
-  sha256 = "1ybkgcqqsd4iiiyv60pxjfi1csszb50bd2cxxsy3sv4q4sil6rr6";
+  version = "1.6.27";
+  patchVersion = "1.6.26";
+  # patchVersion = version;
+  sha256 = "0yxmajq2ri1smpz5spi0f055izbdkmmr7a5zp7d6qd9nfgczz8pw";
   patch_src = fetchurl {
-    url = "mirror://sourceforge/libpng-apng/libpng-${version}-apng.patch.gz";
+    url = "mirror://sourceforge/libpng-apng/libpng-${patchVersion}-apng.patch.gz";
     sha256 = "0b6p2k4afvhk1svargpllcvhxb4g3p857wkqk85cks0yv42ckph1";
   };
   whenPatched = stdenv.lib.optionalString apngSupport;