diff --git a/hack/prepare-upstream.sh b/hack/prepare-upstream.sh
index 84c172a3d..151391d38 100755
--- a/hack/prepare-upstream.sh
+++ b/hack/prepare-upstream.sh
@@ -21,8 +21,8 @@ digest() {
 
 POSTGRES_DIGEST=$(digest POSTGRES)
 POSTGRES_PREVIOUS_DIGEST=$(digest POSTGRES_PREVIOUS)
-POSTGRES_CLAIR_DIGEST=$(digest POSTGRES_CLAIR)
-POSTGRES_CLAIR_PREVIOUS_DIGEST=$(digest POSTGRES_CLAIR_PREVIOUS)
+POSTGRES_CLAIR_DIGEST=$(digest CLAIRPOSTGRES)
+POSTGRES_CLAIR_PREVIOUS_DIGEST=$(digest CLAIRPOSTGRES_PREVIOUS)
 REDIS_DIGEST=$(digest REDIS)
 
 # export variables for yq