diff --git a/Dockerfile b/Dockerfile
index 6c9f16d..f83817c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.10-alpine
+FROM python:3.10-alpine@sha256:7edffe5acc6a2c4c009fece2fbdc85f04fde4c8481202473b880ef3f8fbb2939
 
 WORKDIR /code