diff --git a/inventory.ini b/inventory.ini
index 16dea6d6..984142ad 100644
--- a/inventory.ini
+++ b/inventory.ini
@@ -69,7 +69,7 @@ cluster_name = test-cluster
 # CPU architecture: amd64, arm64
 cpu_architecture = amd64
 
-tidb_version = v4.0.7
+tidb_version = v4.0.8
 
 # process supervision, [systemd, supervise]
 process_supervision = systemd