diff --git a/bundler.js b/bundler.js
index 988360850..28f4ca9a3 100644
--- a/bundler.js
+++ b/bundler.js
@@ -218,7 +218,8 @@ export async function bundleInstall(gemfile, lockFile, platform, engine, rubyVer
   await exec.exec('bundle', ['install', '--jobs', `${jobs}`])
 
   // @actions/cache only allows to save for non-existing keys
-  if (!common.isExactCacheKeyMatch(key, cachedKey)) {
+  // Also, skip saving cache for merge_group event
+  if (!common.isExactCacheKeyMatch(key, cachedKey) && process.env['GITHUB_EVENT_NAME'] !== 'merge_group') {
     if (cachedKey) { // existing cache but Gemfile.lock differs, clean old gems
       await exec.exec('bundle', ['clean'])
     }
diff --git a/dist/index.js b/dist/index.js
index 27cb04d14..80aa5749c 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -232,7 +232,8 @@ async function bundleInstall(gemfile, lockFile, platform, engine, rubyVersion, b
   await exec.exec('bundle', ['install', '--jobs', `${jobs}`])
 
   // @actions/cache only allows to save for non-existing keys
-  if (!common.isExactCacheKeyMatch(key, cachedKey)) {
+  // Also, skip saving cache for merge_group event
+  if (!common.isExactCacheKeyMatch(key, cachedKey) && process.env['GITHUB_EVENT_NAME'] !== 'merge_group') {
     if (cachedKey) { // existing cache but Gemfile.lock differs, clean old gems
       await exec.exec('bundle', ['clean'])
     }