diff --git a/workspaces/arborist/test/fixtures/tap-with-yarn-lock/node_modules/babel-generator/package.json b/workspaces/arborist/test/fixtures/tap-with-yarn-lock/node_modules/babel-generator/package.json
index 01acda15b940f..dbc416c18327c 100644
--- a/workspaces/arborist/test/fixtures/tap-with-yarn-lock/node_modules/babel-generator/package.json
+++ b/workspaces/arborist/test/fixtures/tap-with-yarn-lock/node_modules/babel-generator/package.json
@@ -17,7 +17,7 @@
     "detect-indent": "^4.0.0",
     "jsesc": "^1.3.0",
     "lodash": "^4.17.4",
-    "source-map": "^0.5.7",
+    "source-map": "^0.7.6",
     "trim-right": "^1.0.1"
   },
   "devDependencies": {