diff --git a/build.env b/build.env
index 5061c148d..1a4cc7931 100644
--- a/build.env
+++ b/build.env
@@ -21,6 +21,10 @@ GO111MODULE=on
 GOLANGCI_VERSION=v1.27.0
 GOSEC_VERSION=v2.3.0
 
+# external snapshotter version
+# Refer: https://github.com/kubernetes-csi/external-snapshotter/releases
+SNAPSHOT_VERSION=v3.0.1
+
 # "go test" configuration
 # set to stdout or html to enable coverage reporting, disabled by default
 #TEST_COVERAGE=html
diff --git a/scripts/install-snapshot.sh b/scripts/install-snapshot.sh
index 35b8fe8ba..bc3b245ad 100755
--- a/scripts/install-snapshot.sh
+++ b/scripts/install-snapshot.sh
@@ -2,10 +2,13 @@
 
 # This script can be used to install/delete snapshotcontroller and snapshot beta CRD
 
-SNAPSHOT_VERSION=${SNAPSHOT_VERSION:-"v3.0.1"}
-
 SCRIPT_DIR="$(dirname "${0}")"
 
+# shellcheck source=build.env
+source "${SCRIPT_DIR}/../build.env"
+
+SNAPSHOT_VERSION=${SNAPSHOT_VERSION:-"v3.0.1"}
+
 TEMP_DIR="$(mktemp -d)"
 SNAPSHOTTER_URL="https://raw.githubusercontent.com/kubernetes-csi/external-snapshotter/${SNAPSHOT_VERSION}"