diff --git a/github/github_test.go b/github/github_test.go
index 5a21e6a..7d8b7a2 100644
--- a/github/github_test.go
+++ b/github/github_test.go
@@ -260,7 +260,7 @@ func TestWebhooks(t *testing.T) {
 			filename: "../testdata/github/integration-installation.json",
 			headers: http.Header{
 				"X-Github-Event":  []string{"integration_installation"},
-				"X-Hub-Signature": []string{"sha1=bb2769f05f1a11af3a1edf8f9fac11bae7402a1e"},
+				"X-Hub-Signature": []string{"sha1=1172601d35bdebac5f3aa7618c9e58eafb404c6f"},
 			},
 		},
 		{
@@ -270,7 +270,7 @@ func TestWebhooks(t *testing.T) {
 			filename: "../testdata/github/integration-installation-repositories.json",
 			headers: http.Header{
 				"X-Github-Event":  []string{"integration_installation_repositories"},
-				"X-Hub-Signature": []string{"sha1=2f00a982574188342c2894eb9d1b1e93434687fb"},
+				"X-Hub-Signature": []string{"sha1=7c38ba703a3c89d00823920a47cd8863df8121d2"},
 			},
 		},
 		{
diff --git a/testdata/github/integration-installation-repositories.json b/testdata/github/integration-installation-repositories.json
index 5a3113e..0075b2d 100644
--- a/testdata/github/integration-installation-repositories.json
+++ b/testdata/github/integration-installation-repositories.json
@@ -38,8 +38,8 @@
       "push",
       "pull_request"
     ],
-    "created_at": 1525109898,
-    "updated_at": 1525109899,
+    "created_at": "2022-03-02T18:02:51.000Z",
+    "updated_at": "2022-03-02T18:02:51.000Z",
     "single_file_name": "config.yml"
   },
   "repository_selection": "selected",
diff --git a/testdata/github/integration-installation.json b/testdata/github/integration-installation.json
index 623909f..4e1873a 100644
--- a/testdata/github/integration-installation.json
+++ b/testdata/github/integration-installation.json
@@ -37,8 +37,8 @@
     "events": [
       "pull_request"
     ],
-    "created_at": 1516025475,
-    "updated_at": 1516025475,
+    "created_at": "2022-03-02T18:02:51.000Z",
+    "updated_at": "2022-03-02T18:02:51.000Z",
     "single_file_name": null
   },
   "repositories": [