diff --git a/package.json b/package.json
index b0456cc..2adedbb 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "@coderabbitai/bitbucket",
-	"version": "1.1.0",
+	"version": "1.1.1",
 	"description": "CodeRabbit's TypeScript API client for connecting to Bitbucket Cloud and Bitbucket Data Center",
 	"keywords": [
 		"bitbucket-api-v1",
diff --git a/src/server/interfaces/schema_rest_pull_request_activity.ts b/src/server/interfaces/schema_rest_pull_request_activity.ts
index 421088d..46fa2e7 100644
--- a/src/server/interfaces/schema_rest_pull_request_activity.ts
+++ b/src/server/interfaces/schema_rest_pull_request_activity.ts
@@ -29,19 +29,19 @@ export interface SchemaRestPullRequestActivityUpdated
 }
 
 export function isSchemaRestPullRequestActivityCommented(
-	activity: SchemaRestPullRequestActivity,
+	activity?: SchemaRestPullRequestActivity | SchemaRestPullRequestActivityBase,
 ): activity is SchemaRestPullRequestActivityCommented {
-	return activity.action === "COMMENTED"
+	return activity?.action === "COMMENTED"
 }
 
 export function isSchemaRestPullRequestActivityOpened(
-	activity: SchemaRestPullRequestActivity,
+	activity?: SchemaRestPullRequestActivity | SchemaRestPullRequestActivityBase,
 ): activity is SchemaRestPullRequestActivityOpened {
-	return activity.action === "OPENED"
+	return activity?.action === "OPENED"
 }
 
 export function isSchemaRestPullRequestActivityUpdated(
-	activity: SchemaRestPullRequestActivity,
+	activity?: SchemaRestPullRequestActivity | SchemaRestPullRequestActivityBase,
 ): activity is SchemaRestPullRequestActivityUpdated {
-	return activity.action === "UPDATED"
+	return activity?.action === "UPDATED"
 }