diff --git a/install.sh b/install.sh
index 628315d..47008c3 100644
--- a/install.sh
+++ b/install.sh
@@ -1,6 +1,8 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
+IMAGE_TAG="${TENTACLE_TAG:-latest}"
+
 # -----------------------------
 # Config
 # -----------------------------