diff --git a/Dockerfile b/Dockerfile
index 2b06dde..fe284e4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM thegeeklab/nginx:latest
+FROM thegeeklab/nginx:latest@sha256:e4b8143782380a49e1e24044207c0418acebdb8c3d67274d1c4440df819fcbac
 
 LABEL maintainer="Robert Kaussow <mail@thegeeklab.de>"
 LABEL org.opencontainers.image.authors="Robert Kaussow <mail@thegeeklab.de>"
diff --git a/docker-compose.yml b/docker-compose.yml
index e6f6c76..788466f 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -4,7 +4,7 @@ version: "3"
 services:
   freshrss:
     container_name: freshrss
-    image: thegeeklab/freshrss:latest
+    image: thegeeklab/freshrss:latest@sha256:885529ccbc6d2cb8f8ae05697a4f6752f5758b9fa44bad8bcaba8c05ded50ecf
     ports:
       - "80:8080"
     volumes: