diff --git a/requirements.txt b/requirements.txt
index 18c2b58..1303af2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1,2 @@
-koalix-crm==1.14.0-rc1
\ No newline at end of file
+koalix-crm==1.14.0-rc1
+gunicorn==21.2.0
\ No newline at end of file