diff --git a/.buildbot_dockerfile_debian b/.buildbot_dockerfile_debian
index 37a9742..122054c 100755
--- a/.buildbot_dockerfile_debian
+++ b/.buildbot_dockerfile_debian
@@ -1,9 +1,9 @@
-FROM debian:bullseye
+FROM debian:latest
 ARG CI_UID
 RUN useradd -m -u ${CI_UID} ci
 RUN apt-get update && \
-    apt-get -y install flake8 procps
+    apt-get -y install build-essential flake8 procps
 WORKDIR /ci
 RUN chown ${CI_UID}:${CI_UID} .
 COPY --chown=${CI_UID}:${CI_UID} . .
-CMD sh -x .buildbot.sh
+CMD ["sh", "-x", ".buildbot.sh"]
diff --git a/audit.py b/audit.py
index 4c689c3..76302d2 100644
--- a/audit.py
+++ b/audit.py
@@ -63,7 +63,7 @@
 
 
 def should_skip_advisory(adv_tup):
-    assert(len(adv_tup) == 3)
+    assert len(adv_tup) == 3
 
     # Look for an exact match.
     expiry = None
@@ -74,7 +74,7 @@ def should_skip_advisory(adv_tup):
         # Now try wildcard matching.
         for (skip_tup, skip_expiry) in SKIP_ADVISORIES.items():
             match_list = list(adv_tup)
-            assert(len(skip_tup) == 3)
+            assert len(skip_tup) == 3
             for idx in range(len(skip_tup)):
                 if skip_tup[idx] == '*':
                     match_list[idx] = "*"