diff --git a/cloudpebble/gunicorn.py b/cloudpebble/gunicorn.py
index 6bf7ffe..5d20f61 100644
--- a/cloudpebble/gunicorn.py
+++ b/cloudpebble/gunicorn.py
@@ -8,6 +8,9 @@
 # and tunable rather than relying on gevent's default of 1000.
 worker_connections = int(os.environ.get('WORKER_CONNECTIONS', 1000))
 timeout = 120
+# Allow larger request lines/headers for big Clay watchface configs saved as JSON.
+# Gunicorn's default of 4094 bytes is too small (see issue: "Request Line is too large").
+limit_request_line = 8190
 
 
 def post_fork(server, worker):