diff --git a/Dockerfile b/Dockerfile
index 74d238d..f2147f1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,11 @@
 FROM quay.io/packit/base:c9s
+# [NOTE] Adjust ‹PYTHONPATH› when changing the default image
 
 ENV USER=packit \
-    HOME=/home/packit
+    HOME=/home/packit \
+    # [NOTE] Fixes the issue with importing after upgrading Fedora Messaging to
+    # 3.5.0: fedora-infra/fedora-messaging#364
+    PYTHONPATH="/usr/local/lib/python3.9/site-packages"
 
 COPY files/install-deps.yaml /src/files/
 RUN cd /src/ \