diff --git a/posthog/cdp/templates/webhook/template_webhook.py b/posthog/cdp/templates/webhook/template_webhook.py
index f27822c5e0c24..49e350736de51 100644
--- a/posthog/cdp/templates/webhook/template_webhook.py
+++ b/posthog/cdp/templates/webhook/template_webhook.py
@@ -78,6 +78,7 @@
             "label": "Headers",
             "secret": False,
             "required": False,
+            "default": {"Content-Type": "application/json"},
         },
         {
             "key": "debug",