diff --git a/package.json b/package.json
index cf312d7..4a4f649 100644
--- a/package.json
+++ b/package.json
@@ -57,8 +57,8 @@
     "js-yaml": "^4.1.0",
     "keymbinatorial": "^2.0.0",
     "screwdriver-data-schema": "^24.0.0",
-    "screwdriver-notifications-email": "^3.0.1",
-    "screwdriver-notifications-slack": "^5.0.0",
+    "screwdriver-notifications-email": "^4.0.0",
+    "screwdriver-notifications-slack": "^6.0.0",
     "screwdriver-workflow-parser": "^5.0.0",
     "shell-escape": "^0.2.0",
     "tinytim": "^0.1.1"