diff --git a/responders/RT4/requirements.txt b/responders/RT4/requirements.txt
index f47373772..52dd08a8d 100644
--- a/responders/RT4/requirements.txt
+++ b/responders/RT4/requirements.txt
@@ -1,4 +1,5 @@
 defang
 jinja2
 rt
-requests
\ No newline at end of file
+requests
+cortexutils