diff --git a/dist/post_run/index.js b/dist/post_run/index.js
index 20a5360..ab74a49 100644
--- a/dist/post_run/index.js
+++ b/dist/post_run/index.js
@@ -27904,7 +27904,7 @@ function buildCacheKeys() {
         keys.push(cacheKey);
         if (yield pathExists(`go.mod`)) {
             // Add checksum to key to invalidate a cache when dependencies change.
-            cacheKey += yield checksumFile(`cache-key`, `go.mod`);
+            cacheKey += yield checksumFile(`sha1`, `go.mod`);
         }
         else {
             cacheKey += `nogomod`;
diff --git a/dist/run/index.js b/dist/run/index.js
index 63ce273..d6fbb4f 100644
--- a/dist/run/index.js
+++ b/dist/run/index.js
@@ -27916,7 +27916,7 @@ function buildCacheKeys() {
         keys.push(cacheKey);
         if (yield pathExists(`go.mod`)) {
             // Add checksum to key to invalidate a cache when dependencies change.
-            cacheKey += yield checksumFile(`cache-key`, `go.mod`);
+            cacheKey += yield checksumFile(`sha1`, `go.mod`);
         }
         else {
             cacheKey += `nogomod`;
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..e591614
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,3 @@
+module github.com/golangci/golangci-lint-action
+
+go 1.14
diff --git a/src/cache.ts b/src/cache.ts
index 4061c8e..4c6cbf0 100644
--- a/src/cache.ts
+++ b/src/cache.ts
@@ -42,7 +42,7 @@ async function buildCacheKeys(): Promise<string[]> {
 
   if (await pathExists(`go.mod`)) {
     // Add checksum to key to invalidate a cache when dependencies change.
-    cacheKey += await checksumFile(`cache-key`, `go.mod`)
+    cacheKey += await checksumFile(`sha1`, `go.mod`)
   } else {
     cacheKey += `nogomod`
   }