diff --git a/Dockerfile.pg b/Dockerfile.pg
index d476c9b6..2a4d02d7 100644
--- a/Dockerfile.pg
+++ b/Dockerfile.pg
@@ -1,4 +1,4 @@
-ARG NODE_VERSION=20-alpine
+ARG NODE_VERSION="20-alpine"
 FROM node:${NODE_VERSION} AS builder
 
 WORKDIR /app