diff --git a/pkgs/development/libraries/gtk+/3.x.nix b/pkgs/development/libraries/gtk+/3.x.nix
index 0f33f2a5f7f..1a5931d9828 100644
--- a/pkgs/development/libraries/gtk+/3.x.nix
+++ b/pkgs/development/libraries/gtk+/3.x.nix
@@ -13,7 +13,7 @@ with stdenv.lib;
 
 let
   ver_maj = "3.20";
-  ver_min = "6";
+  ver_min = "8";
   version = "${ver_maj}.${ver_min}";
 in
 stdenv.mkDerivation rec {
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   src = fetchurl {
     url = "mirror://gnome/sources/gtk+/${ver_maj}/gtk+-${version}.tar.xz";
-    sha256 = "3f8016563a96b1cfef4ac9e795647f6316deb2978ff939b19e4e4f8f936fa4b2";
+    sha256 = "9841bd9b4d23c045c474b10fdde9da958af904b63783701e796391d55d4396f3";
   };
 
   outputs = [ "dev" "out" ];