diff --git a/.gitea/workflows/desktop-client-build.yml b/.gitea/workflows/desktop-client-build.yml
index 9fc4e83..d62f4b4 100644
--- a/.gitea/workflows/desktop-client-build.yml
+++ b/.gitea/workflows/desktop-client-build.yml
@@ -391,6 +391,19 @@ jobs:
       - name: Install dependencies
         run: pnpm install --frozen-lockfile
 
+      - name: Install Wine for Windows packaging
+        if: needs.resolve.outputs.build_win == 'true'
+        run: |
+          set -eu
+          if command -v wine >/dev/null 2>&1; then
+            wine --version
+            exit 0
+          fi
+
+          apt-get update
+          apt-get install -y --no-install-recommends wine64 wine
+          wine --version
+
       - name: Build unsigned desktop packages
         working-directory: apps/desktop-client
         run: |