diff --git a/Dockerfile b/Dockerfile
index 0352853a8..657ba5179 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -64,6 +64,7 @@ RUN apt-get update \
 		libpq-dev \
 		libqpdf-dev \
 		libldap2-dev \
+		libsasl2-dev \
 	&& python3 -m pip install --upgrade --no-cache-dir supervisor \
   && python3 -m pip install --no-cache-dir -r ../requirements.txt \
 	&& apt-get -y purge build-essential libqpdf-dev \
diff --git a/ansible/tasks/main.yml b/ansible/tasks/main.yml
index eaf10275d..700b32af7 100644
--- a/ansible/tasks/main.yml
+++ b/ansible/tasks/main.yml
@@ -34,6 +34,7 @@
       - python3-setuptools
       - python3-wheel
       - libldap2-dev
+      - libsasl2-dev
 
 # upstream virtualenv in Ubuntu 20.04 is broken
 # https://github.com/pypa/virtualenv/issues/1873