diff --git a/Dockerfile b/Dockerfile
index 4ae425b..1c2d172 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,7 +12,7 @@ RUN set -ex; \
     cd /build; \
     make build;
 
-FROM debian:bullseye-slim@sha256:48b8ff47a38534cd7f058730eaea9fef2168e2c45bd53ee425333583cfa14afa
+FROM debian:bullseye-slim@sha256:3f9e53602537cc817d96f0ebb131a39bdb16fa8b422137659a9a597e7e3853c1
 
 COPY --from=build /build/bin/signaling /usr/local/bin/signaling
 COPY --from=build /build/server.conf.in /config/server.conf