diff --git a/build.env b/build.env
index ea9241b6d..570ea780f 100644
--- a/build.env
+++ b/build.env
@@ -11,6 +11,9 @@
 # cephcsi image version
 CSI_IMAGE_VERSION=canary
 
+# cephcsi upgrade version
+CSI_UPGRADE_VERSION=v3.9.0
+
 # Ceph version to use
 BASE_IMAGE=quay.io/ceph/ceph:v17
 CEPH_VERSION=quincy