diff --git a/requirements.txt b/requirements.txt
index bc33e4c..639f91c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-twisted==13.2.0
+twisted==19.7.0
 txampext==0.0.11
 clarent==0.0.11
 texttable==0.8.1