diff --git a/packages/cli/package.json b/packages/cli/package.json
index d4e78f73..0fa37348 100644
--- a/packages/cli/package.json
+++ b/packages/cli/package.json
@@ -40,7 +40,7 @@
     "argparse": "^1.0.10",
     "babylon": "^6.18.0",
     "colors": "^1.3.3",
-    "diff": "^3.5.0",
+    "diff": "^4",
     "leveldown": "^5.0.0",
     "recast": "^0.18.0",
     "ts-node": "^7.0.0",
diff --git a/yarn.lock b/yarn.lock
index 62011ff7..dc1d1206 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2821,12 +2821,12 @@ di@^0.0.1:
   resolved "https://registry.yarnpkg.com/di/-/di-0.0.1.tgz#806649326ceaa7caa3306d75d985ea2748ba913c"
   integrity sha1-gGZJMmzqp8qjMG112YXqJ0i6kTw=
 
-diff@^3.1.0, diff@^3.5.0:
+diff@^3.1.0:
   version "3.5.0"
   resolved "https://registry.yarnpkg.com/diff/-/diff-3.5.0.tgz#800c0dd1e0a8bfbc95835c202ad220fe317e5a12"
   integrity sha512-A46qtFgd+g7pDZinpnwiRJtxbC1hpgf0uzP3iG89scHk0AUC7A1TGxf5OiiOUv/JMZR8GOt8hL900hV0bOy5xA==
 
-diff@^4.0.1:
+diff@^4, diff@^4.0.1:
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/diff/-/diff-4.0.2.tgz#60f3aecb89d5fae520c11aa19efc2bb982aade7d"
   integrity sha512-58lmxKSA4BNyLz+HHMUzlOEpg09FV+ev6ZMe3vJihgdxzgcwZ8VoEEPmALCZG9LmqfVoNMMKpttIYTVG6uDY7A==