diff --git a/spec/schemas/insights._common.yaml b/spec/schemas/insights._common.yaml
index 67e63935..45b218c1 100644
--- a/spec/schemas/insights._common.yaml
+++ b/spec/schemas/insights._common.yaml
@@ -21,7 +21,7 @@ components:
       properties:
         timestamp:
           type: integer
-          format: int32
+          format: int64
           description: The timestamp of the query execution.
         total_shards:
           type: integer