diff --git a/lib/index.js b/lib/index.js
index d18d2e4e..4e93a87c 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -8,12 +8,13 @@ module.exports = {
     fileData,
     filename,
     configString,
-    { instrument, rootDir }
+    { config, instrument, rootDir }
   ) {
     return crypto
       .createHash('md5')
       .update(
         babelJest.getCacheKey(fileData, filename, configString, {
+          config,
           instrument,
           rootDir
         }),