diff --git a/pkgs/by-name/gl/glasgow/package.nix b/pkgs/by-name/gl/glasgow/package.nix
index 56133af24a68..8be3f8f4f861 100644
--- a/pkgs/by-name/gl/glasgow/package.nix
+++ b/pkgs/by-name/gl/glasgow/package.nix
@@ -10,7 +10,7 @@
 
 python3.pkgs.buildPythonApplication rec {
   pname = "glasgow";
-  version = "0-unstable-2025-07-28";
+  version = "0-unstable-2025-12-22";
   # Similar to `pdm show`, but without the commit counter
   pdmVersion =
     let
@@ -18,16 +18,17 @@ python3.pkgs.buildPythonApplication rec {
       rev = lib.substring 0 7 src.rev;
     in
     "${tag}.1.dev0+g${rev}";
-  # the latest commit ID touching the `firmware` directory, can differ from rev!
-  firmwareGitRev = "4fe35360";
+  # The latest commit ID touching the `firmware` directory, before a "deploy firmware" commit.
+  # Differs from rev!
+  firmwareGitRev = "8b5afc70";
 
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "GlasgowEmbedded";
     repo = "glasgow";
-    rev = "18442e9684cdda4bb2cbd2be9c31b3c6dffc625a";
-    hash = "sha256-b0kpgCHMk5Ylj4hY29sHRzY/zI1JXReHioHxHSO4h5E=";
+    rev = "ccee116d8b59f25ed0874d152f6b9f9974b185f1";
+    hash = "sha256-2fF0lPfRtpci76q4fEhWAwLBXP0kfIP3dH5z8u/+yd8=";
   };
 
   nativeBuildInputs = [