diff --git a/README-ci-failures.md b/README-ci-failures.md
index 6e4f678c8b9..595b083f84b 100644
--- a/README-ci-failures.md
+++ b/README-ci-failures.md
@@ -46,7 +46,7 @@ In this case, you should:
    [Google Cloud](https://console.cloud.google.com/gcr/images/o1labs-192920/global/mina-toolchain)
    where they have been automatically uploaded. Look for your branch name and
    commit hash in the second column. You should find several images suffixed
-   with `-bullseye` and `-focal` (Debian versions).
+   with `-bullseye` or `-focal` (Debian versions).
 3. For each such image, retrieve its full name and hash by hovering its link and
    clicking the `Copy full image name` tooltip that appears (or retrieve it on
    the image's page).
diff --git a/automation/services/watchdog/Dockerfile b/automation/services/watchdog/Dockerfile
index 43e6e00f825..05e207350f6 100644
--- a/automation/services/watchdog/Dockerfile
+++ b/automation/services/watchdog/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.9.16-slim-buster
+FROM python:3.9.16-slim-bullseye
 
 ARG GCLOUDSDK_DOWNLOAD_URL="https://dl.google.com/dl/cloudsdk/channels/rapid/downloads/google-cloud-sdk-296.0.1-linux-x86_64.tar.gz"
 ARG WATCHMAN_DEB_URL="http://ftp.us.debian.org/debian/pool/main/w/watchman/watchman_4.9.0-5+b1_amd64.deb"