diff --git a/pkgs/games/dwarf-fortress/themes/cla.nix b/pkgs/games/dwarf-fortress/themes/cla.nix
index 09b2cc8b647..39b7e5d2a4c 100644
--- a/pkgs/games/dwarf-fortress/themes/cla.nix
+++ b/pkgs/games/dwarf-fortress/themes/cla.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation {
     cp -r data raw $out
   '';
 
-  passthru.dfVersion = "0.42.05";
+  passthru.dfVersion = "0.42.06";
 
   preferLocalBuild = true;