diff --git a/event-to-slack.cf.json b/event-to-slack.cf.json
index 5fbba95..5208bf6 100644
--- a/event-to-slack.cf.json
+++ b/event-to-slack.cf.json
@@ -183,7 +183,7 @@
                         }
                     }
                 },
-                "Runtime": "nodejs16.x",
+                "Runtime": "nodejs18.x",
                 "MemorySize": 128,
                 "Timeout": 10,
                 "Description": "Lambda to push SecurityHub findings to Slack",