diff --git a/Dockerfile b/Dockerfile
index 6c9f16d..feb3d42 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.10-alpine
+FROM python:3.10-alpine@sha256:3ccf8d308cd8cf6b97540a2c5b202b8ce513bdd43a1fd73c1d9e657b96e7ded4
 
 WORKDIR /code