diff --git a/.changeset/gorgeous-experts-sniff.md b/.changeset/gorgeous-experts-sniff.md
new file mode 100644
index 0000000..d0bc55a
--- /dev/null
+++ b/.changeset/gorgeous-experts-sniff.md
@@ -0,0 +1,5 @@
+---
+'@team-plain/typescript-sdk-dev': minor
+---
+
+Fixed webhook schema definition
diff --git a/src/webhooks/webhook-schema.json b/src/webhooks/webhook-schema.json
index 76850ee..f1dcac5 100644
--- a/src/webhooks/webhook-schema.json
+++ b/src/webhooks/webhook-schema.json
@@ -517,7 +517,7 @@
         },
         "color": {
           "type": "string",
-          "pattern": "^#([a-f0-9]{3,4}|[a-f0-9]{4}(?:[a-f0-9]{2}){1,2})\\b$"
+          "pattern": "^#([a-fA-F0-9]{3,4}|[a-fA-F0-9]{4}(?:[a-fA-F0-9]{2}){1,2})$"
         },
         "createdAt": {
           "$ref": "#/definitions/datetime"