diff --git a/github/payload.go b/github/payload.go
index 35de4be..fae98be 100644
--- a/github/payload.go
+++ b/github/payload.go
@@ -3023,9 +3023,9 @@ type ProjectCardPayload struct {
 			Type              string `json:"type"`
 			SiteAdmin         bool   `json:"site_admin"`
 		} `json:"creator"`
-		CreatedAt  int64  `json:"created_at"`
-		UpdatedAt  int64  `json:"updated_at"`
-		ContentURL string `json:"content_url"`
+		CreatedAt  time.Time `json:"created_at"`
+		UpdatedAt  time.Time `json:"updated_at"`
+		ContentURL string    `json:"content_url"`
 	} `json:"project_card"`
 	Repository struct {
 		ID       int64  `json:"id"`
diff --git a/testdata/github/project-card.json b/testdata/github/project-card.json
index 1c3608f..d4266d8 100644
--- a/testdata/github/project-card.json
+++ b/testdata/github/project-card.json
@@ -26,8 +26,8 @@
       "type": "User",
       "site_admin": false
     },
-    "created_at": 1483569391,
-    "updated_at": 1483569391,
+    "created_at": "2021-04-22T14:38:41Z",
+    "updated_at": "2021-04-22T14:38:41Z",
     "content_url": "https://api.github.com/repos/baxterthehacker/public-repo/issues/2"
   },
   "repository": {
@@ -146,4 +146,4 @@
     "type": "User",
     "site_admin": false
   }
-}
\ No newline at end of file
+}