diff --git a/server/Dockerfile b/server/Dockerfile
index 4e257eb..96458a9 100644
--- a/server/Dockerfile
+++ b/server/Dockerfile
@@ -10,7 +10,7 @@ RUN --mount=type=cache,target=/usr/local/cargo/registry \
     cargo build --release
 
 # our final base
-FROM debian:buster-slim
+FROM debian:bookworm-slim
 
 RUN apt-get update && apt-get install -y libssl-dev ca-certificates
 
diff --git a/server/github-action.Dockerfile b/server/github-action.Dockerfile
index e8eb89e..73f63e6 100644
--- a/server/github-action.Dockerfile
+++ b/server/github-action.Dockerfile
@@ -1,7 +1,7 @@
 # NOTE: This is only for github action, and the main binary is built there,
 # so don't use this directly.
 
-FROM debian:buster-slim
+FROM debian:bookworm-slim
 
 RUN apt-get update && apt-get install -y libssl-dev ca-certificates