diff --git a/workspaces/arborist/test/fixtures/tap-with-yarn-lock/node_modules/babel-core/package.json b/workspaces/arborist/test/fixtures/tap-with-yarn-lock/node_modules/babel-core/package.json
index c609c0b8616e9..1a00cac930f14 100644
--- a/workspaces/arborist/test/fixtures/tap-with-yarn-lock/node_modules/babel-core/package.json
+++ b/workspaces/arborist/test/fixtures/tap-with-yarn-lock/node_modules/babel-core/package.json
@@ -44,7 +44,7 @@
     "path-is-absolute": "^1.0.1",
     "private": "^0.1.8",
     "slash": "^1.0.0",
-    "source-map": "^0.5.7"
+    "source-map": "^0.7.4"
   },
   "devDependencies": {
     "babel-helper-fixtures": "^6.26.2",