diff --git a/.changelog/7264.txt b/.changelog/7264.txt
new file mode 100644
index 00000000000..e1444eba1fc
--- /dev/null
+++ b/.changelog/7264.txt
@@ -0,0 +1,3 @@
+```release-note:bug
+bigquery: fixed permadiff on `max_time_travel_hours` of `google_bigquery_dataset`
+```
diff --git a/google/resource_bigquery_dataset.go b/google/resource_bigquery_dataset.go
index bec9339494e..4bdd3e06895 100644
--- a/google/resource_bigquery_dataset.go
+++ b/google/resource_bigquery_dataset.go
@@ -182,6 +182,7 @@ Changing this forces a new resource to be created.`,
 			},
 			"max_time_travel_hours": {
 				Type:        schema.TypeString,
+				Computed:    true,
 				Optional:    true,
 				Description: `Defines the time travel window in hours. The value can be from 48 to 168 hours (2 to 7 days).`,
 			},