diff --git a/packages/babel-helper-transform-fixture-test-runner/src/index.js b/packages/babel-helper-transform-fixture-test-runner/src/index.js
index 68214f665024..dafe2ff3e360 100644
--- a/packages/babel-helper-transform-fixture-test-runner/src/index.js
+++ b/packages/babel-helper-transform-fixture-test-runner/src/index.js
@@ -20,7 +20,7 @@ import QuickLRU from "quick-lru";
 
 import diff from "jest-diff";
 
-const cachedScripts = new QuickLRU({ maxSize: 512 });
+const cachedScripts = new QuickLRU({ maxSize: 10 });
 const contextModuleCache = new WeakMap();
 const sharedTestContext = createContext();