diff --git a/action.yaml b/action.yaml
index 6c4cf08..649c3c5 100644
--- a/action.yaml
+++ b/action.yaml
@@ -79,7 +79,7 @@ runs:
       if: success() || steps.generator.conclusion == 'failure'
       shell: bash
       run: |
-        curl --fail --silent --show-error --header "X-Vault-Token: ${VAULT_TOKEN}" --data "" "${VAULT_SERVER}/v1/auth/token/revoke-self"
+        curl --fail --silent --show-error --header "X-Vault-Token: ${VAULT_TOKEN}" --data "" "${VAULT_SERVER%/}/v1/auth/token/revoke-self"
       env:
         VAULT_SERVER: ${{ inputs.vault_server }}
         VAULT_TOKEN: ${{ steps.vault_auth.outputs.vault_token }}
diff --git a/generate-and-sign b/generate-and-sign
index 2dad09a..5abf365 100755
--- a/generate-and-sign
+++ b/generate-and-sign
@@ -16,7 +16,7 @@ cd "$workdir"
 ssh-keygen -q -t ed25519 -N '' -f "./${keyfile}"
 pubkey=$(cat "$pubfile")
 
-vault_server_url="${VAULT_SERVER}/v1/${SSH_BACKEND}/sign/${SSH_ROLE}"
+vault_server_url="${VAULT_SERVER%/}/v1/${SSH_BACKEND}/sign/${SSH_ROLE}"
 
 curl \
     --fail \
diff --git a/github-vault-auth b/github-vault-auth
index 986d27d..876ea80 100755
--- a/github-vault-auth
+++ b/github-vault-auth
@@ -26,7 +26,7 @@ curl \
     --connect-timeout 10 \
     --output "$vault_response" \
     --data '{"jwt": "'"$github_jwt"'", "role": "'"$ROLE"'"}' \
-    "${VAULT_SERVER}/v1/auth/${BACKEND}/login"
+    "${VAULT_SERVER%/}/v1/auth/${BACKEND}/login"
 
 vault_token=$(jq --exit-status --raw-output .auth.client_token "$vault_response")
 echo "::add-mask::$vault_token"