diff --git a/node_modules/plur/package.json b/node_modules/plur/package.json
index fe91e17719..93bca57610 100644
--- a/node_modules/plur/package.json
+++ b/node_modules/plur/package.json
@@ -36,8 +36,8 @@
     "irregular-plurals": "^3.2.0"
   },
   "devDependencies": {
-    "ava": "^1.4.1",
-    "tsd": "^0.11.0",
-    "xo": "^0.26.1"
+    "ava": "^4.0.0",
+    "tsd": "^0.17.0",
+    "xo": "^0.42.0"
   }
 }
\ No newline at end of file