diff --git a/Dockerfile b/Dockerfile
index 9761085..d979ff1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:20-alpine
+FROM node:20-alpine@sha256:fb4cd12c85ee03686f6af5362a0b0d56d50c58a04632e6c0fb8363f609372293
 
 WORKDIR /src