diff --git a/docs/concepts-guidelines.md b/docs/concepts-guidelines.md
index c1da382..9517031 100644
--- a/docs/concepts-guidelines.md
+++ b/docs/concepts-guidelines.md
@@ -308,10 +308,10 @@ The action can use GPG to sign commits with a GPG key that you generate yourself
 
       - uses: crazy-max/ghaction-import-gpg@v3
         with:
-          gpg-private-key: ${{ secrets.GPG_PRIVATE_KEY }}
+          gpg_private_key: ${{ secrets.GPG_PRIVATE_KEY }}
           passphrase: ${{ secrets.GPG_PASSPHRASE }}
-          git-user-signingkey: true
-          git-commit-gpgsign: true
+          git_user_signingkey: true
+          git_commit_gpgsign: true
 
       # Make changes to pull request here