diff --git a/postgres-appliance/Dockerfile b/postgres-appliance/Dockerfile
index 6e4dc275..08320a10 100644
--- a/postgres-appliance/Dockerfile
+++ b/postgres-appliance/Dockerfile
@@ -62,7 +62,8 @@ ENV POSTGIS_VERSION=3.5 \
     PLPROFILER=REL4_2_5 \
     PG_PROFILE=4.7 \
     PAM_OAUTH2=v1.0.1 \
-    PG_PERMISSIONS_COMMIT=f4b7c18676fa64236a1c8e28d34a35764e4a70e2
+    PG_PERMISSIONS_COMMIT=f4b7c18676fa64236a1c8e28d34a35764e4a70e2 \
+    TIMESCALEDB=$TIMESCALEDB
 
 WORKDIR /builddeps
 RUN bash base.sh