diff --git a/pkgs/development/tools/documentation/gtk-doc/default.nix b/pkgs/development/tools/documentation/gtk-doc/default.nix
index 9d617e671271..91bd12a90a23 100644
--- a/pkgs/development/tools/documentation/gtk-doc/default.nix
+++ b/pkgs/development/tools/documentation/gtk-doc/default.nix
@@ -26,10 +26,10 @@ stdenv.mkDerivation rec {
 
   configureFlags = [ "--disable-scrollkeeper" ];
 
-  # Make six available for binaries, python.withPackages creates a wrapper
+  # Make pygments available for binaries, python.withPackages creates a wrapper
   # but scripts are not allowed in shebangs so we link it into sys.path.
   postInstall = ''
-    ln -s ${python3.pkgs.six}/${python3.sitePackages}/* $out/share/gtk-doc/python/
+    ln -s ${python3.pkgs.pygments}/${python3.sitePackages}/* $out/share/gtk-doc/python/
   '';
 
   doCheck = false; # requires a lot of stuff