diff --git a/packages/cups-dymo/default.nix b/packages/cups-dymo/default.nix
index 30d1f97..13c9466 100644
--- a/packages/cups-dymo/default.nix
+++ b/packages/cups-dymo/default.nix
@@ -9,6 +9,7 @@
 }: let
   srcRoot = fetchgit {
     url = "https://github.com/dymosoftware/Drivers.git";
+    rev = "795a815363a4401a30a1c0ef94f3381186172843";
     hash = "sha256-3fRALvyGYVpDL0HyUnjDi+TDTX9yeQG6LfZtNuv42pY=";
   };
 in