diff --git a/package.json b/package.json
index b122e9aa..31fc177d 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
   },
   "dependencies": {
     "debug": "^3.0.1",
-    "probot": "^3.0.0"
+    "probot": "^4.0.0"
   },
   "devDependencies": {
     "coveralls": "^3.0.0",