diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2a9cb7205a..6742c05778 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -76,6 +76,8 @@ jobs:
 
       - name: Setup Go
         uses: actions/setup-go@v5
+        with:
+          go-version: 1.21.9
 
       - name: Install httpbin
         run: go install github.com/mccutchen/go-httpbin/v2/cmd/go-httpbin@latest