diff --git a/.github/workflows/ci-cd.yml b/.github/workflows/ci-cd.yml
index 9fd217681..b75cd221d 100644
--- a/.github/workflows/ci-cd.yml
+++ b/.github/workflows/ci-cd.yml
@@ -170,7 +170,7 @@ jobs:
           
           git config --global user.signingkey ${{ secrets.GPG_PUB_KEY }}
 
-          export GPG_TTY=$(tty)
+          export GPG_TTY=`tty`
           mkdir -p ~/.gnupg/
           printf "${{ secrets.GPG_SIGNING_KEY }}" | base64 --decode > ~/.gnupg/private.key
           gpg --import ~/.gnupg/private.key