diff --git a/docs/release-notes/version-2.10.md b/docs/release-notes/version-2.10.md
index 7d99959cc..3434ddd7d 100644
--- a/docs/release-notes/version-2.10.md
+++ b/docs/release-notes/version-2.10.md
@@ -16,6 +16,7 @@
 * [#6070](https://github.com/netbox-community/netbox/issues/6070) - Add missing `count_ipaddresses` attribute to VMInterface serializer
 * [#6073](https://github.com/netbox-community/netbox/issues/6073) - Permit users to manage their own REST API tokens without needing explicit permission
 * [#6081](https://github.com/netbox-community/netbox/issues/6081) - Fix interface connections REST API endpoint
+* [#6082](https://github.com/netbox-community/netbox/issues/6082) - Support colons in webhook header values
 * [#6108](https://github.com/netbox-community/netbox/issues/6108) - Do not infer tenant assignment from parent objects for prefixes, IP addresses
 * [#6117](https://github.com/netbox-community/netbox/issues/6117) - Handle exception when attempting to assign an MPTT-enabled model as its own parent
 * [#6131](https://github.com/netbox-community/netbox/issues/6131) - Correct handling of boolean fields when cloning objects
diff --git a/netbox/extras/models/models.py b/netbox/extras/models/models.py
index 4917a7e44..759d37896 100644
--- a/netbox/extras/models/models.py
+++ b/netbox/extras/models/models.py
@@ -140,7 +140,7 @@ class Webhook(models.Model):
         ret = {}
         data = render_jinja2(self.additional_headers, context)
         for line in data.splitlines():
-            header, value = line.split(':')
+            header, value = line.split(':', 1)
             ret[header.strip()] = value.strip()
         return ret