diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index b0bd5f07e28..89808567964 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -160,7 +160,8 @@ jobs:
       - uses: actions/setup-go@v6
         with:
           go-version: '1.19'
-      - uses: ruby/setup-ruby@v1
+      # Pin to specific version until Lambda Builders support bundler 4.0.0
+      - uses: ruby/setup-ruby@v1.268.0
         with:
           ruby-version: "3.3"
       - uses: actions/setup-node@v6