diff --git a/web/Dockerfile b/web/Dockerfile
index a8570fd..75409d3 100644
--- a/web/Dockerfile
+++ b/web/Dockerfile
@@ -18,7 +18,7 @@ RUN set -ex \
 	   python3 py3-setuptools xapian-core xapian-bindings-python3 \
 	&& python3 -m pip install -U django==2.1.5 pip \
 	&& python3 -m pip install mailmanclient==3.2.1 \
-		postorius==1.2.2 \
+		postorius==1.2.3 \
 		hyperkitty==1.2.1 \
 		django-mailman3==1.2.0 \
 		whoosh \