diff --git a/.forgejo/workflows/build.yaml b/.forgejo/workflows/build.yaml
index 94fc9e6..29d47c3 100644
--- a/.forgejo/workflows/build.yaml
+++ b/.forgejo/workflows/build.yaml
@@ -8,6 +8,10 @@ jobs:
         uses: actions/checkout@v4
       - name: Install dependencies
         run: npm install
+      - name: Write signing key
+        run: echo "$SIGNING_KEY" > key.pem
+        env:
+          SIGNING_KEY: ${{secrets.SIGNING_KEY}}
       - name: Build extension
         run: ./build.sh
       - name: Upload extension
diff --git a/build.sh b/build.sh
index 7d38385..e66c56b 100755
--- a/build.sh
+++ b/build.sh
@@ -2,5 +2,5 @@
 set -e
 rm -rf out proxy-settings.crx
 npx tsc
-cp manifest.json *.html out
+cp manifest.json ./*.html out
 npx crx3 -p key.pem -o proxy-settings.crx out