diff --git a/src/cleanup/index.ts b/src/cleanup/index.ts
index 6bf6593..26ddf66 100644
--- a/src/cleanup/index.ts
+++ b/src/cleanup/index.ts
@@ -27,7 +27,7 @@ export async function cleanup() {
     core.setFailed(errorMessage(error));
   }
 }
-/* istanbul ignore next */
+/* c8 ignore start */
 if (require.main === module) {
   (async () => {
     await cleanup();
diff --git a/src/index.ts b/src/index.ts
index 5760389..ed1c73b 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -197,7 +197,7 @@ export async function run() {
   }
 }
 
-/* istanbul ignore next */
+/* c8 ignore start */
 if (require.main === module) {
   (async () => {
     await run();