diff --git a/desktop/electron-builder.yml b/desktop/electron-builder.yml
index 8af4cff..de55da0 100644
--- a/desktop/electron-builder.yml
+++ b/desktop/electron-builder.yml
@@ -56,6 +56,15 @@ extraResources:
       - "!7zip-bin/**"
       - "!@electron/**"
       - "!@develar/**"
+      # node-gyp only COMPILES native modules; nothing loads it at runtime (node-pty
+      # resolves its prebuilt .node directly). It also ships a vendored Python tree,
+      # and `npmRebuild` leaves __pycache__/*.pyc behind in it — codesign then tries
+      # to sign those and fails with "A timestamp was expected but was not found",
+      # taking the whole build down. Excluding the package removes both the dead
+      # weight and the failure surface.
+      - "!node-gyp/**"
+      # Belt and braces: no Python bytecode anywhere in the shipped tree.
+      - "!**/__pycache__/**"
 # Rebuild native deps (node-pty) against the Electron ABI before packaging + copy.
 npmRebuild: true
 mac: