diff --git a/dist/setup/index.js b/dist/setup/index.js
index 9ad3784..d4b4aa8 100644
--- a/dist/setup/index.js
+++ b/dist/setup/index.js
@@ -88045,6 +88045,7 @@ const cache_utils_1 = __nccwpck_require__(1678);
 const restoreCache = (versionSpec, packageManager, cacheDependencyPath) => __awaiter(void 0, void 0, void 0, function* () {
     const packageManagerInfo = yield (0, cache_utils_1.getPackageManagerInfo)(packageManager);
     const platform = process.env.RUNNER_OS;
+    const arch = process.arch;
     const cachePaths = yield (0, cache_utils_1.getCacheDirectoryPath)(packageManagerInfo);
     const dependencyFilePath = cacheDependencyPath
         ? cacheDependencyPath
@@ -88054,7 +88055,7 @@ const restoreCache = (versionSpec, packageManager, cacheDependencyPath) => __awa
         throw new Error('Some specified paths were not resolved, unable to cache dependencies.');
     }
     const linuxVersion = process.env.RUNNER_OS === 'Linux' ? `${process.env.ImageOS}-` : '';
-    const primaryKey = `setup-go-${platform}-${linuxVersion}go-${versionSpec}-${fileHash}`;
+    const primaryKey = `setup-go-${platform}-${arch}-${linuxVersion}go-${versionSpec}-${fileHash}`;
     core.debug(`primary key is ${primaryKey}`);
     core.saveState(constants_1.State.CachePrimaryKey, primaryKey);
     const cacheKey = yield cache.restoreCache(cachePaths, primaryKey);
diff --git a/src/cache-restore.ts b/src/cache-restore.ts
index 183df9e..18d930b 100644
--- a/src/cache-restore.ts
+++ b/src/cache-restore.ts
@@ -15,6 +15,7 @@ export const restoreCache = async (
 ) => {
   const packageManagerInfo = await getPackageManagerInfo(packageManager);
   const platform = process.env.RUNNER_OS;
+  const arch = process.arch;
 
   const cachePaths = await getCacheDirectoryPath(packageManagerInfo);
 
@@ -31,7 +32,7 @@ export const restoreCache = async (
 
   const linuxVersion =
     process.env.RUNNER_OS === 'Linux' ? `${process.env.ImageOS}-` : '';
-  const primaryKey = `setup-go-${platform}-${linuxVersion}go-${versionSpec}-${fileHash}`;
+  const primaryKey = `setup-go-${platform}-${arch}-${linuxVersion}go-${versionSpec}-${fileHash}`;
   core.debug(`primary key is ${primaryKey}`);
 
   core.saveState(State.CachePrimaryKey, primaryKey);