diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bcf1a3fe..be3ac6fb 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,6 +17,10 @@ jobs:
         with:
           go-version: "1.21"
 
+      - name: Install zsh
+        # This is used for the TestDefaultShell test
+        run: sudo apt-get install -qqy zsh
+
       - name: Generate and format code
         run: |
           go generate ./cmd/... ./pkg/...