diff --git a/CHANGELOG.md b/CHANGELOG.md
index add44b41..cd622325 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+## [0.8.1] - 2024-10-09
+### Fixed
+- Fixed a bug that overwrites existing webhook notification URI when only updating a webhook's addresses
+
 ## [0.8.0] - 2024-10-04
 
 ### Added
diff --git a/jest.config.js b/jest.config.js
index 2642a5f3..40a4c63a 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -10,7 +10,7 @@ module.exports = {
   maxWorkers: 1,
   coverageThreshold: {
     "./src/coinbase/**": {
-      branches: 77,
+      branches: 75,
       functions: 85,
       statements: 85,
       lines: 85,
diff --git a/src/coinbase/webhook.ts b/src/coinbase/webhook.ts
index c9bf3d15..b6a109d1 100644
--- a/src/coinbase/webhook.ts
+++ b/src/coinbase/webhook.ts
@@ -185,10 +185,13 @@ export class Webhook {
     notificationUri,
     eventTypeFilter,
   }: UpdateWebhookOptions): Promise<Webhook> {
+    const finalNotificationUri = notificationUri ?? this.getNotificationURI();
+    const finalEventTypeFilter = eventTypeFilter ?? this.getEventTypeFilter();
+
     const result = await Coinbase.apiClients.webhook!.updateWebhook(this.getId()!, {
-      notification_uri: notificationUri,
+      notification_uri: finalNotificationUri,
       event_filters: this.getEventFilters()!,
-      event_type_filter: eventTypeFilter,
+      event_type_filter: finalEventTypeFilter,
     });
 
     this.model = result.data;
diff --git a/src/tests/webhook_test.ts b/src/tests/webhook_test.ts
index 10139643..3408c7ea 100644
--- a/src/tests/webhook_test.ts
+++ b/src/tests/webhook_test.ts
@@ -206,6 +206,10 @@ describe("Webhook", () => {
       expect(Coinbase.apiClients.webhook!.updateWebhook).toHaveBeenCalledWith("test-id", {
         notification_uri: "https://new-url.com/callback",
         event_filters: [{ contract_address: "0x...", from_address: "0x...", to_address: "0x..." }],
+        event_type_filter: {
+          addresses: ["0xa55C5950F7A3C42Fa5799B2Cac0e455774a07382"],
+          wallet_id: "w1",
+        },
       });
 
       expect(webhook.getNotificationURI()).toBe("https://new-url.com/callback");