diff --git a/docker/flashlight.Dockerfile b/docker/flashlight.Dockerfile
index 8802617..afae952 100644
--- a/docker/flashlight.Dockerfile
+++ b/docker/flashlight.Dockerfile
@@ -55,6 +55,7 @@ ENV MYSQL_DATABASE=prestashop
 ENV DEBUG_MODE=false
 ENV PS_FOLDER=$PS_FOLDER
 ENV MYSQL_EXTRA_DUMP=
+ENV PS_VERSION=$PS_VERSION
 
 RUN mkdir -p "$COMPOSER_HOME" \
   && chown -R www-data:www-data "$COMPOSER_HOME"