diff --git a/get-deb/Dockerfile-bullseye b/get-deb/Dockerfile-bullseye
index 17d46e1..90d0b81 100644
--- a/get-deb/Dockerfile-bullseye
+++ b/get-deb/Dockerfile-bullseye
@@ -1,4 +1,4 @@
-FROM debian:11
+FROM debian:bullseye-20260505
 LABEL maintainer="joelnbarnham@gmail.com"
 
 RUN \
diff --git a/python-docs/Dockerfile b/python-docs/Dockerfile
index 8ecb11d..d2851f7 100644
--- a/python-docs/Dockerfile
+++ b/python-docs/Dockerfile
@@ -1,4 +1,4 @@
-FROM debian:11
+FROM debian:bullseye-20260505
 LABEL maintainer="joelnbarnham@gmail.com"
 
 WORKDIR /build
diff --git a/unrealircd/Dockerfile b/unrealircd/Dockerfile
index 309285a..5bc0116 100644
--- a/unrealircd/Dockerfile
+++ b/unrealircd/Dockerfile
@@ -1,4 +1,4 @@
-FROM debian:11
+FROM debian:bullseye-20260505
 LABEL maintainer="joelnbarnham@gmail.com"
 
 ENV UNREAL_VERSION=6.0.3