diff --git a/.github/ISSUE_TEMPLATE/bug_report.md b/.github/ISSUE_TEMPLATE/bug_report.md
index 6a83c28a..b409cec7 100644
--- a/.github/ISSUE_TEMPLATE/bug_report.md
+++ b/.github/ISSUE_TEMPLATE/bug_report.md
@@ -8,4 +8,4 @@ assignees: ''
 ---
 
 **Tag/version of Container Images**
-Choose from: latest, rolling, 0.3, 0.3.*
+Choose from: rolling, 0.3, 0.3.*, 0.4.*
diff --git a/core/Dockerfile b/core/Dockerfile
index a583a7f0..9b2cd532 100644
--- a/core/Dockerfile
+++ b/core/Dockerfile
@@ -14,7 +14,7 @@ RUN --mount=type=cache,target=/root/.cache \
     && python3 -m pip install -U pip setuptools wheel \
         && python3 -m pip install psycopg2 \
                    gunicorn==19.9.0 \
-                   mailman==3.3.4 \
+                   mailman==3.3.5 \
                    mailman-hyperkitty==1.1.0 \
                    pymysql \
                    'sqlalchemy<1.4.0' \
diff --git a/postorius/Dockerfile b/postorius/Dockerfile
index 8a77cd5a..f8d719b4 100644
--- a/postorius/Dockerfile
+++ b/postorius/Dockerfile
@@ -17,7 +17,7 @@ RUN --mount=type=cache,target=/root/.cache \
 		postgresql-client mysql-client py3-mysqlclient curl mailcap gettext \
 		python3 py3-pip libffi libuuid pcre-dev \
 	&& python3 -m pip install -U 'Django<3.2' pip setuptools wheel \
-	&& python3 -m pip install postorius==1.3.5 \
+	&& python3 -m pip install postorius==1.3.6 \
         uwsgi \
 		'psycopg2<2.9' \
 		dj-database-url \
diff --git a/web/Dockerfile b/web/Dockerfile
index 7f236bc3..074e9005 100644
--- a/web/Dockerfile
+++ b/web/Dockerfile
@@ -18,7 +18,7 @@ RUN --mount=type=cache,target=/root/.cache \
 	   python3 py3-pip xapian-core xapian-bindings-python3 libffi pcre-dev \
 	&& python3 -m pip install -U 'Django<3.2' pip setuptools wheel \
 	&& pip install mailmanclient==3.3.3 \
-		postorius==1.3.5 \
+		postorius==1.3.6 \
 		hyperkitty==1.3.4 \
 		django-mailman3==1.3.7 \
 		whoosh \