diff --git a/Dockerfile b/Dockerfile
index 3d03cc4..ed8d4fa 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -20,6 +20,9 @@ RUN pip install --upgrade pip && \
     pip install --upgrade setuptools && \
     pip install matrix-synapse==v${VERSION} psycopg2-binary python-ldap matrix-synapse-ldap3 lxml publicsuffix2 git+https://github.com/matrix-org/synapse-s3-storage-provider.git@${STORAGE_PROVIDER_VERSION} matrix-synapse[oidc]
 
+# Updated suffix list
+RUN curl -L https://publicsuffix.org/list/public_suffix_list.dat -o /app/code/env/lib/python3.10/site-packages/publicsuffix2/public_suffix_list.dat
+
 RUN ln -sf /app/data/index.html /app/code/env/lib/python3.10/site-packages/synapse/static/index.html
 
 RUN chown -R cloudron.cloudron /app/code