diff --git a/core/Dockerfile.dev b/core/Dockerfile.dev
index 20a391f..15e19f8 100644
--- a/core/Dockerfile.dev
+++ b/core/Dockerfile.dev
@@ -15,7 +15,7 @@ RUN --mount=type=cache,target=/root/.cache \
     apk update \
 	&& apk add --no-cache --virtual build-deps gcc python3-dev musl-dev \
    	    postgresql-dev git libffi-dev  \
-    && apk add --no-cache bash su-exec postgresql-client mysql-client curl python3 py3-pip linux-headers \
+    && apk add --no-cache bash su-exec postgresql-client mysql-client curl python3 py3-pip linux-headers py-cryptography \
     && python3 -m pip install -U psycopg2 pymysql setuptools wheel \
     && python3 -m pip install \
         git+https://gitlab.com/mailman/mailman@${CORE_REF} \
diff --git a/postorius/Dockerfile b/postorius/Dockerfile
index f8d719b..4bc0b2f 100644
--- a/postorius/Dockerfile
+++ b/postorius/Dockerfile
@@ -15,7 +15,7 @@ RUN --mount=type=cache,target=/root/.cache \
 		postgresql-dev mariadb-dev python3-dev libffi-dev openldap-dev cargo rust \
 	&& apk add --no-cache --virtual .mailman-rundeps bash sassc \
 		postgresql-client mysql-client py3-mysqlclient curl mailcap gettext \
-		python3 py3-pip libffi libuuid pcre-dev \
+		python3 py3-pip libffi libuuid pcre-dev py-cryptography \
 	&& python3 -m pip install -U 'Django<3.2' pip setuptools wheel \
 	&& python3 -m pip install postorius==1.3.6 \
         uwsgi \
diff --git a/postorius/Dockerfile.dev b/postorius/Dockerfile.dev
index f1560cb..91409be 100644
--- a/postorius/Dockerfile.dev
+++ b/postorius/Dockerfile.dev
@@ -19,7 +19,7 @@ RUN --mount=type=cache,target=/root/.cache \
 		postgresql-dev mariadb-dev python3-dev libffi-dev git cargo rust \
 	&& apk add --no-cache --virtual .mailman-rundeps bash sassc \
 		postgresql-client mysql-client py3-mysqlclient curl mailcap \
-		python3 py3-pip libffi gettext \
+		python3 py3-pip libffi gettext py-cryptography \
     && python3 -m pip install -U pip setuptools wheel \
     && python3 -m pip install -U \
         git+https://gitlab.com/mailman/mailmanclient@${CLIENT_REF} \
diff --git a/web/Dockerfile b/web/Dockerfile
index 011b4c5..ccfa3b2 100644
--- a/web/Dockerfile
+++ b/web/Dockerfile
@@ -15,7 +15,7 @@ RUN --mount=type=cache,target=/root/.cache \
            postgresql-dev mariadb-dev python3-dev libffi-dev openldap-dev cargo rust \
 	&& apk add --no-cache --virtual .mailman-rundeps bash sassc \
 	   postgresql-client mysql-client py3-mysqlclient curl mailcap gettext \
-	   python3 py3-pip xapian-core xapian-bindings-python3 libffi pcre-dev \
+	   python3 py3-pip xapian-core xapian-bindings-python3 libffi pcre-dev py-cryptography \
 	&& python3 -m pip install -U 'Django<3.2' pip setuptools wheel \
 	&& pip install mailmanclient==3.3.3 \
 		postorius==1.3.6 \
diff --git a/web/Dockerfile.dev b/web/Dockerfile.dev
index 2c5951c..8a969e4 100644
--- a/web/Dockerfile.dev
+++ b/web/Dockerfile.dev
@@ -20,7 +20,7 @@ RUN --mount=type=cache,target=/root/.cache \
         postgresql-dev mariadb-dev python3-dev libffi-dev openldap-dev cargo rust \
     && apk add --no-cache --virtual .mailman-rundeps bash sassc pcre-dev \
         python3 py3-pip postgresql-client mysql-client py3-mysqlclient \
-        curl mailcap xapian-core xapian-bindings-python3 libffi gettext \
+        curl mailcap xapian-core xapian-bindings-python3 libffi gettext py-cryptography \
     && python3 -m pip install -U pip setuptools wheel \
     && python3 -m pip install -U \
         git+https://gitlab.com/mailman/mailmanclient@${CLIENT_REF} \