diff --git a/Dockerfile b/Dockerfile
index 6c9f16d..71e2ffb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.10-alpine
+FROM python:3.10-alpine@sha256:b8541313282fa2e680cd19592c52aaa97adb833c7b8fcd73e22ecf0799ae549e
 
 WORKDIR /code