diff --git a/CHANGELOG.md b/CHANGELOG.md
index e4140753..26a37fa9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # CHANGELOG
 
+## Next Release
+
+- Fixes the payload wrapping for updating a webhook
+
 ## v9.5.0 (2024-10-24)
 
 - Adds `tracking_codes` as a parameter of the `all` method on the TrackerService
diff --git a/easypost/services/webhook_service.py b/easypost/services/webhook_service.py
index 2817e666..4e2ef885 100644
--- a/easypost/services/webhook_service.py
+++ b/easypost/services/webhook_service.py
@@ -3,7 +3,12 @@
     Dict,
 )
 
+from easypost.easypost_object import convert_to_easypost_object
 from easypost.models import Webhook
+from easypost.requestor import (
+    RequestMethod,
+    Requestor,
+)
 from easypost.services.base_service import BaseService
 
 
@@ -26,7 +31,11 @@ def retrieve(self, id: str) -> Webhook:
 
     def update(self, id: str, **params) -> Webhook:
         """Update a Webhook."""
-        return self._update_resource(self._model_class, id, **params)
+        url = self._instance_url(self._model_class, id)
+
+        response = Requestor(self._client).request(method=RequestMethod.PATCH, url=url, params=params)
+
+        return convert_to_easypost_object(response=response)
 
     def delete(self, id: str) -> None:
         """Delete a Webhook."""
diff --git a/examples b/examples
index 0492e408..7669825f 160000
--- a/examples
+++ b/examples
@@ -1 +1 @@
-Subproject commit 0492e408e1b37b2ec18bcb4a4d228ab0f458f59d
+Subproject commit 7669825fb53be074d7f585c78c4f38ad4fefe0d0
diff --git a/tests/cassettes/test_webhook_create.yaml b/tests/cassettes/test_webhook_create.yaml
index 3ce6296d..bce56884 100644
--- a/tests/cassettes/test_webhook_create.yaml
+++ b/tests/cassettes/test_webhook_create.yaml
@@ -1,6 +1,7 @@
 interactions:
 - request:
-    body: '{"webhook": {"url": "http://example.com"}}'
+    body: '{"webhook": {"url": "http://example.com", "webhook_secret": "s\u00e9cret",
+      "custom_headers": [{"name": "test", "value": "header"}]}}'
     headers:
       Accept:
       - '*/*'
@@ -9,7 +10,7 @@ interactions:
       Connection:
       - keep-alive
       Content-Length:
-      - '42'
+      - '132'
       Content-Type:
       - application/json
       authorization:
@@ -20,14 +21,14 @@ interactions:
     uri: https://api.easypost.com/v2/webhooks
   response:
     body:
-      string: '{"id": "hook_2d6400825b4011efbc7c119ee916485a", "object": "Webhook",
-        "mode": "test", "url": "http://example.com", "created_at": "2024-08-15T19:54:27Z",
-        "disabled_at": null}'
+      string: '{"id": "hook_5086302eeeef11ef883e4736f95f329e", "object": "Webhook",
+        "mode": "test", "url": "http://example.com", "created_at": "2025-02-19T18:28:29Z",
+        "disabled_at": null, "custom_headers": [{"name": "test", "value": "header"}]}'
     headers:
       cache-control:
       - private, no-cache, no-store
       content-length:
-      - '161'
+      - '213'
       content-type:
       - application/json; charset=utf-8
       expires:
@@ -42,27 +43,25 @@ interactions:
       - chunked
       x-backend:
       - easypost
-      x-canary:
-      - direct
       x-content-type-options:
       - nosniff
       x-download-options:
       - noopen
       x-ep-request-uuid:
-      - 62c1f5d966be5cf2e78865a0001778b0
+      - 3c3ed33567b622cce2b8e5f1000336bc
       x-frame-options:
       - SAMEORIGIN
       x-node:
-      - bigweb43nuq
+      - bigweb40nuq
       x-permitted-cross-domain-policies:
       - none
       x-proxied:
-      - intlb4nuq c0f5e722d1
-      - extlb2nuq b6e1b5034c
+      - intlb3nuq 51d74985a2
+      - extlb2nuq 99aac35317
       x-runtime:
-      - '0.126613'
+      - '0.367575'
       x-version-label:
-      - easypost-202408151917-1527448f18-master
+      - easypost-202502191732-9cdc8ea15b-master
       x-xss-protection:
       - 1; mode=block
     status:
@@ -84,7 +83,7 @@ interactions:
       user-agent:
       - <REDACTED>
     method: DELETE
-    uri: https://api.easypost.com/v2/webhooks/hook_2d6400825b4011efbc7c119ee916485a
+    uri: https://api.easypost.com/v2/webhooks/hook_5086302eeeef11ef883e4736f95f329e
   response:
     body:
       string: '{}'
@@ -112,20 +111,20 @@ interactions:
       x-download-options:
       - noopen
       x-ep-request-uuid:
-      - 62c1f5d966be5cf3e78865a0001778f4
+      - 3c3ed33367b622cde2b8e5f200033741
       x-frame-options:
       - SAMEORIGIN
       x-node:
-      - bigweb39nuq
+      - bigweb59nuq
       x-permitted-cross-domain-policies:
       - none
       x-proxied:
-      - intlb3nuq c0f5e722d1
-      - extlb2nuq b6e1b5034c
+      - intlb3nuq 51d74985a2
+      - extlb2nuq 99aac35317
       x-runtime:
-      - '0.397231'
+      - '0.286270'
       x-version-label:
-      - easypost-202408151917-1527448f18-master
+      - easypost-202502191732-9cdc8ea15b-master
       x-xss-protection:
       - 1; mode=block
     status:
diff --git a/tests/cassettes/test_webhook_update.yaml b/tests/cassettes/test_webhook_update.yaml
index f6b522e1..66035525 100644
--- a/tests/cassettes/test_webhook_update.yaml
+++ b/tests/cassettes/test_webhook_update.yaml
@@ -20,14 +20,14 @@ interactions:
     uri: https://api.easypost.com/v2/webhooks
   response:
     body:
-      string: '{"id": "hook_2e96c0205b4011efaa5e4f8e947e652b", "object": "Webhook",
-        "mode": "test", "url": "http://example.com", "created_at": "2024-08-15T19:54:29Z",
-        "disabled_at": null}'
+      string: '{"id": "hook_72e4caf4eeef11efb30a1373530d9838", "object": "Webhook",
+        "mode": "test", "url": "http://example.com", "created_at": "2025-02-19T18:29:26Z",
+        "disabled_at": null, "custom_headers": []}'
     headers:
       cache-control:
       - private, no-cache, no-store
       content-length:
-      - '161'
+      - '181'
       content-type:
       - application/json; charset=utf-8
       expires:
@@ -49,27 +49,28 @@ interactions:
       x-download-options:
       - noopen
       x-ep-request-uuid:
-      - 62c1f5d966be5cf4e78865a300177ade
+      - 3c3ed32f67b62306e2b8e6d800036fff
       x-frame-options:
       - SAMEORIGIN
       x-node:
-      - bigweb43nuq
+      - bigweb32nuq
       x-permitted-cross-domain-policies:
       - none
       x-proxied:
-      - intlb4nuq c0f5e722d1
-      - extlb2nuq b6e1b5034c
+      - intlb3nuq 51d74985a2
+      - extlb2nuq 99aac35317
       x-runtime:
-      - '0.147174'
+      - '0.121274'
       x-version-label:
-      - easypost-202408151917-1527448f18-master
+      - easypost-202502191732-9cdc8ea15b-master
       x-xss-protection:
       - 1; mode=block
     status:
       code: 201
       message: Created
 - request:
-    body: '{"webhook": {}}'
+    body: '{"webhook_secret": "s\u00e9cret", "custom_headers": [{"name": "test", "value":
+      "header"}]}'
     headers:
       Accept:
       - '*/*'
@@ -78,7 +79,7 @@ interactions:
       Connection:
       - keep-alive
       Content-Length:
-      - '15'
+      - '90'
       Content-Type:
       - application/json
       authorization:
@@ -86,17 +87,17 @@ interactions:
       user-agent:
       - <REDACTED>
     method: PATCH
-    uri: https://api.easypost.com/v2/webhooks/hook_2e96c0205b4011efaa5e4f8e947e652b
+    uri: https://api.easypost.com/v2/webhooks/hook_72e4caf4eeef11efb30a1373530d9838
   response:
     body:
-      string: '{"id": "hook_2e96c0205b4011efaa5e4f8e947e652b", "object": "Webhook",
-        "mode": "test", "url": "http://example.com", "created_at": "2024-08-15T19:54:29Z",
-        "disabled_at": null}'
+      string: '{"id": "hook_72e4caf4eeef11efb30a1373530d9838", "object": "Webhook",
+        "mode": "test", "url": "http://example.com", "created_at": "2025-02-19T18:29:26Z",
+        "disabled_at": null, "custom_headers": [{"name": "test", "value": "header"}]}'
     headers:
       cache-control:
       - private, no-cache, no-store
       content-length:
-      - '161'
+      - '213'
       content-type:
       - application/json; charset=utf-8
       expires:
@@ -116,20 +117,20 @@ interactions:
       x-download-options:
       - noopen
       x-ep-request-uuid:
-      - 62c1f5d966be5cf5e78865a300177b13
+      - 3c3ed32f67b62306e2b8e6d900037029
       x-frame-options:
       - SAMEORIGIN
       x-node:
-      - bigweb42nuq
+      - bigweb56nuq
       x-permitted-cross-domain-policies:
       - none
       x-proxied:
-      - intlb3nuq c0f5e722d1
-      - extlb2nuq b6e1b5034c
+      - intlb4nuq 51d74985a2
+      - extlb2nuq 99aac35317
       x-runtime:
-      - '0.553461'
+      - '0.637407'
       x-version-label:
-      - easypost-202408151917-1527448f18-master
+      - easypost-202502191732-9cdc8ea15b-master
       x-xss-protection:
       - 1; mode=block
     status:
@@ -151,7 +152,7 @@ interactions:
       user-agent:
       - <REDACTED>
     method: DELETE
-    uri: https://api.easypost.com/v2/webhooks/hook_2e96c0205b4011efaa5e4f8e947e652b
+    uri: https://api.easypost.com/v2/webhooks/hook_72e4caf4eeef11efb30a1373530d9838
   response:
     body:
       string: '{}'
@@ -174,25 +175,27 @@ interactions:
       - chunked
       x-backend:
       - easypost
+      x-canary:
+      - direct
       x-content-type-options:
       - nosniff
       x-download-options:
       - noopen
       x-ep-request-uuid:
-      - 62c1f5d966be5cf5e78865a300177bc0
+      - 3c3ed32e67b62307e2b8e9e9000370f3
       x-frame-options:
       - SAMEORIGIN
       x-node:
-      - bigweb34nuq
+      - bigweb32nuq
       x-permitted-cross-domain-policies:
       - none
       x-proxied:
-      - intlb3nuq c0f5e722d1
-      - extlb2nuq b6e1b5034c
+      - intlb4nuq 51d74985a2
+      - extlb2nuq 99aac35317
       x-runtime:
-      - '0.447202'
+      - '0.326322'
       x-version-label:
-      - easypost-202408151917-1527448f18-master
+      - easypost-202502191732-9cdc8ea15b-master
       x-xss-protection:
       - 1; mode=block
     status:
diff --git a/tests/conftest.py b/tests/conftest.py
index a95732dc..be08784e 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -45,7 +45,7 @@ def pytest_sessionfinish(session, exitstatus):
 
 
 @pytest.fixture(autouse=True)
-def check_expired_cassettes(expiration_days: int = 180, throw_error: bool = False):
+def check_expired_cassettes(expiration_days: int = 365, throw_error: bool = False):
     """Checks for expired cassettes and throws errors if they are too old and must be re-recorded."""
     test_name = os.environ.get("PYTEST_CURRENT_TEST").split(":")[-1].split(" ")[0]  # type: ignore
     cassette_filepath = os.path.join("tests", "cassettes", f"{test_name}.yaml")
@@ -338,17 +338,22 @@ def event_bytes():
 
 @pytest.fixture
 def webhook_hmac_signature():
-    return read_fixture_data()["webhook_hmac_signature"]
+    return read_fixture_data()["webhooks"]["hmac_signature"]
 
 
 @pytest.fixture
 def webhook_secret():
-    return read_fixture_data()["webhook_secret"]
+    return read_fixture_data()["webhooks"]["secret"]
 
 
 @pytest.fixture
 def webhook_url():
-    return read_fixture_data()["webhook_url"]
+    return read_fixture_data()["webhooks"]["url"]
+
+
+@pytest.fixture
+def webhook_custom_headers():
+    return read_fixture_data()["webhooks"]["custom_headers"]
 
 
 @pytest.fixture
diff --git a/tests/test_webhook.py b/tests/test_webhook.py
index 386504bd..021ae77a 100644
--- a/tests/test_webhook.py
+++ b/tests/test_webhook.py
@@ -5,12 +5,18 @@
 
 
 @pytest.mark.vcr()
-def test_webhook_create(webhook_url, test_client):
-    webhook = test_client.webhook.create(url=webhook_url)
+def test_webhook_create(webhook_url, webhook_secret, webhook_custom_headers, test_client):
+    webhook = test_client.webhook.create(
+        url=webhook_url,
+        webhook_secret=webhook_secret,
+        custom_headers=webhook_custom_headers,
+    )
 
     assert isinstance(webhook, Webhook)
     assert str.startswith(webhook.id, "hook_")
     assert webhook.url == webhook_url
+    assert webhook.custom_headers[0]["name"] == "test"
+    assert webhook.custom_headers[0]["value"] == "header"
 
     test_client.webhook.delete(
         webhook.id
@@ -42,11 +48,17 @@ def test_webhook_all(page_size, test_client):
 
 
 @pytest.mark.vcr()
-def test_webhook_update(webhook_url, test_client):
+def test_webhook_update(webhook_url, webhook_secret, webhook_custom_headers, test_client):
     webhook = test_client.webhook.create(url=webhook_url)
-    test_client.webhook.update(webhook.id)
+    updated_webhook = test_client.webhook.update(
+        webhook.id,
+        webhook_secret=webhook_secret,
+        custom_headers=webhook_custom_headers,
+    )
 
-    assert isinstance(webhook, Webhook)
+    assert isinstance(updated_webhook, Webhook)
+    assert updated_webhook.custom_headers[0]["name"] == "test"
+    assert updated_webhook.custom_headers[0]["value"] == "header"
 
     test_client.webhook.delete(
         webhook.id