diff --git a/node_modules/slash/package.json b/node_modules/slash/package.json
index c845a31bb8..6b4f36a1e1 100644
--- a/node_modules/slash/package.json
+++ b/node_modules/slash/package.json
@@ -28,8 +28,8 @@
     "convert"
   ],
   "devDependencies": {
-    "ava": "^1.4.1",
-    "tsd": "^0.7.2",
-    "xo": "^0.24.0"
+    "ava": "^4.0.0",
+    "tsd": "^0.17.0",
+    "xo": "^0.40.3"
   }
 }
\ No newline at end of file