diff --git a/core/Dockerfile b/core/Dockerfile
index da0d1e0..acd4057 100644
--- a/core/Dockerfile
+++ b/core/Dockerfile
@@ -7,7 +7,7 @@ COPY docker-entrypoint.sh /usr/local/bin/
 
 #Install all required packages, add user for executing mailman and set execution rights for startup script
 RUN apk update \
-    && apk add --virtual build-deps gcc python3-dev musl-dev postgresql-dev \
+    && apk add --virtual build-deps gcc python3-dev musl-dev postgresql-dev libffi-dev \
     && apk add bash su-exec postgresql-client mysql-client curl \
     && pip install psycopg2 \
                    mailman==3.1.1 \
diff --git a/core/Dockerfile.dev b/core/Dockerfile.dev
index 66589c3..08045bc 100644
--- a/core/Dockerfile.dev
+++ b/core/Dockerfile.dev
@@ -13,7 +13,7 @@ ARG MM3_HK_REF
 #Install all required packages, add user for executing mailman and set execution
 #rights for startup script
 RUN apk update \
-    && apk add --virtual build-deps gcc python3-dev musl-dev postgresql-dev git \
+    && apk add --virtual build-deps gcc python3-dev musl-dev postgresql-dev git libffi-dev \
     && apk add bash su-exec postgresql-client mysql-client curl \
     && pip install -U psycopg2 pymysql \
                       git+https://gitlab.com/mailman/mailman@${CORE_REF} \