diff --git a/Dockerfile b/Dockerfile
index 5a644ee..962be95 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,5 @@
-FROM node:alpine
+# 22.7.0-alpine3.20
+FROM node@sha256:ed9736a13b88ba55cbc08c75c9edac8ae7f72840482e40324670b299336680c1
 
 WORKDIR /usr/src/app