diff --git a/pkgs/applications/graphics/inkscape/extensions/silhouette/default.nix b/pkgs/applications/graphics/inkscape/extensions/silhouette/default.nix
index 3aef4497e1cf..3a121a9bfde0 100644
--- a/pkgs/applications/graphics/inkscape/extensions/silhouette/default.nix
+++ b/pkgs/applications/graphics/inkscape/extensions/silhouette/default.nix
@@ -23,14 +23,14 @@ let
 in
 python3.pkgs.buildPythonApplication rec {
   pname = "inkscape-silhouette";
-  version = "1.28";
+  version = "1.29";
   format = "setuptools";
 
   src = fetchFromGitHub {
     owner = "fablabnbg";
     repo = pname;
-    rev = "v${version}";
-    sha256 = "sha256-uNVhdkZFadL7QNlCsXq51TbhzRKH9KYDPDNCFhw3cQs=";
+    rev = "refs/tags/v${version}";
+    sha256 = "sha256-MfR88BuaAx6n5XRIjslpIk4PnDf6TLU9AsmHxKkcFS0=";
   };
 
   patches = [