diff --git a/pkgs/development/libraries/gtk+/3.x.nix b/pkgs/development/libraries/gtk+/3.x.nix
index 9bf95d015dd7..2a7c7b88c385 100644
--- a/pkgs/development/libraries/gtk+/3.x.nix
+++ b/pkgs/development/libraries/gtk+/3.x.nix
@@ -10,7 +10,7 @@ assert cupsSupport -> cups != null;
 
 let
   ver_maj = "3.18";
-  ver_min = "0";
+  ver_min = "3";
   version = "${ver_maj}.${ver_min}";
 in
 stdenv.mkDerivation rec {
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
 
   src = fetchurl {
     url = "mirror://gnome/sources/gtk+/${ver_maj}/gtk+-${version}.tar.xz";
-    sha256 = "7fb8ae257403317d3852bad28d064d35f67e978b1fed8b71d5997e87204271b9";
+    sha256 = "f3c76791f93f51e260b03676f83007730b9875a0a9bf5cd42442e2f14e593546";
   };
 
   nativeBuildInputs = [ pkgconfig gettext gobjectIntrospection perl ];