diff --git a/pkgs/applications/graphics/graphicsmagick/default.nix b/pkgs/applications/graphics/graphicsmagick/default.nix
index 536249e70a60..95cfcaef01a2 100644
--- a/pkgs/applications/graphics/graphicsmagick/default.nix
+++ b/pkgs/applications/graphics/graphicsmagick/default.nix
@@ -2,14 +2,14 @@
 , libjpeg, libpng, libtiff, libxml2, zlib, libtool, xz
 , libX11, quantumdepth ? 8}:
 
-let version = "1.3.18"; in
+let version = "1.3.21"; in
 
 stdenv.mkDerivation {
   name = "graphicsmagick-${version}";
 
   src = fetchurl {
     url = "mirror://sourceforge/graphicsmagick/GraphicsMagick-${version}.tar.xz";
-    sha256 = "1axh4j2jr3l92dan15b2nmx9da4l7i0rcz9b5bvfd4q742zfwj7x";
+    sha256 = "07rwpxy62r9m4r2cg6yll2nr698mxyvbji8vgsivcxhpk56k0ich";
   };
 
   configureFlags = "--enable-shared --with-quantum-depth=" + toString quantumdepth;