diff --git a/requirements.txt b/requirements.txt
index 5a2e2f0..9386979 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 boto3==1.28.42
-c2cwsgiutils[broadcast]>=4.0,<5
+c2cwsgiutils[broadcast]>=4.0,<7
 Pillow==10.2.0
 wand==0.6.11
 WebTest==3.0.0