diff --git a/engine/security/https/Dockerfile b/engine/security/https/Dockerfile
index a3cc132..f087303 100644
--- a/engine/security/https/Dockerfile
+++ b/engine/security/https/Dockerfile
@@ -1,4 +1,4 @@
-FROM debian
+FROM debian:11
 
 RUN apt-get update && apt-get install -yq openssl