diff --git a/Dockerfile b/Dockerfile
index 20246b580..2620dd3e5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -30,7 +30,7 @@ RUN make build-go NAME=pomerium
 RUN touch /config.yaml
 
 # build our own root trust store from current stable
-FROM debian:stable@sha256:1c3446475ac28a9f42a4627d8945d7bed88b8128b5850b61c5890ff47f317681 as casource
+FROM debian:stable@sha256:4567e1e0f991465035c207a66205913ea3b9c3415db0556bc7120fbb66a2e5a7 as casource
 RUN apt-get update && apt-get install -y ca-certificates
 # Remove expired root (https://github.com/pomerium/pomerium/issues/2653)
 RUN rm /usr/share/ca-certificates/mozilla/DST_Root_CA_X3.crt && update-ca-certificates