diff --git a/build/synapse/Dockerfile b/build/synapse/Dockerfile
index 5dc49fb..3d14da9 100644
--- a/build/synapse/Dockerfile
+++ b/build/synapse/Dockerfile
@@ -9,6 +9,9 @@ RUN \
 
 RUN /synapse-venv/bin/pip install psycopg2 coincurve pycryptodome
 
+# Temporary patch until raiden-network/raiden#4634 is resolved
+RUN sed -i -E 's/^MAX_DISPLAYNAME_LEN = 100$/MAX_DISPLAYNAME_LEN = 200/' /synapse-venv/lib/python3.7/site-packages/synapse/handlers/profile.py
+
 COPY eth_auth_provider.py /synapse-venv/lib/python3.7/site-packages/
 COPY synapse-entrypoint.sh /bin/
 COPY render_config_template.py /bin/