diff --git a/docker/Dockerfile.concretefhe-env b/docker/Dockerfile.concretefhe-env
index bbce6cdce..83f17375f 100644
--- a/docker/Dockerfile.concretefhe-env
+++ b/docker/Dockerfile.concretefhe-env
@@ -1,7 +1,7 @@
 FROM ubuntu:20.04
 
 # Do not change the line below it will be updated automatically when the docker is regenerated
-# compiler timestamp: unknown
+# compiler timestamp: 2021-11-17T13:33:13Z
 
 # Remove once compiler is on PyPi https://github.com/zama-ai/concretefhe-internal/issues/809
 ARG WHEEL