diff --git a/.github/workflows/deploy.linux.temurin.lts.yml b/.github/workflows/deploy.linux.temurin.lts.yml
index 894e5e1..3fa0b38 100644
--- a/.github/workflows/deploy.linux.temurin.lts.yml
+++ b/.github/workflows/deploy.linux.temurin.lts.yml
@@ -22,7 +22,7 @@ jobs:
       - name: Import signing key
         env:
           PGP_SIGNING_KEY: ${{ secrets.PGP_SIGNING_KEY }}
-        run: echo ${PGP_SIGNING_KEY} | gpg --import
+        run: echo "${PGP_SIGNING_KEY}" | gpg --import
 
       - name: Log in to Quay.io.
         uses: redhat-actions/podman-login@v1.7