diff --git a/pkgs/development/tools/documentation/gtk-doc/default.nix b/pkgs/development/tools/documentation/gtk-doc/default.nix
index c55b2510e650..d328aa06c9fe 100644
--- a/pkgs/development/tools/documentation/gtk-doc/default.nix
+++ b/pkgs/development/tools/documentation/gtk-doc/default.nix
@@ -5,11 +5,11 @@
 
 stdenv.mkDerivation rec {
   name = "gtk-doc-${version}";
-  version = "1.29";
+  version = "1.30";
 
   src = fetchurl {
     url = "mirror://gnome/sources/gtk-doc/${version}/${name}.tar.xz";
-    sha256 = "1cc6yl8l275qn3zpjl6f0s4fwmkczngjr9hhsdv74mln4h08wmql";
+    sha256 = "17h6nwhis66z4dxjrc833wvfl6pqjp81yfx3fq6x7k1qp2749xm4";
   };
 
   patches = [