diff --git a/.tangled/workflows/ci.yml b/.tangled/workflows/ci.yml
index e8a9524..ec6de6c 100644
--- a/.tangled/workflows/ci.yml
+++ b/.tangled/workflows/ci.yml
@@ -13,5 +13,7 @@ dependencies:
 environment:
   MUTANT_SINCE: 'HEAD^'
 steps:
+  - name: Prep
+    command: bundle install
   - name: "Units, integration, incremental mutation"
     command: bin/rake