diff --git a/.github/workflows/hashibot-vars.yml b/.github/workflows/hashibot-vars.yml
index c45d5ef1c..4bc212cbd 100644
--- a/.github/workflows/hashibot-vars.yml
+++ b/.github/workflows/hashibot-vars.yml
@@ -29,7 +29,7 @@ jobs:
         uses: hashicorp/vault-action@v2
         with:
           url: ${{ steps.vault-auth.outputs.addr }}
-          caCertificates: ${{ steps.vault-auth.outputs.ca_certificate }}
+          caCertificate: ${{ steps.vault-auth.outputs.ca_certificate }}
           token: ${{ steps.vault-auth.outputs.token }}
           secrets:
             kv/data/team/vagrant/hashibot email | HASHIBOT_EMAIL;