diff --git a/Python 3.6/Aggregator_MS/requirements.txt b/Python 3.6/Aggregator_MS/requirements.txt
index 8cd0ec6..43555b9 100644
--- a/Python 3.6/Aggregator_MS/requirements.txt	
+++ b/Python 3.6/Aggregator_MS/requirements.txt	
@@ -14,7 +14,7 @@ kafka-python==1.4.3
 MarkupSafe==1.0
 ply==3.11
 py-zipkin==0.12.0
-PyJWT==1.6.0
+PyJWT==2.4.0
 PyYAML==3.12
 requests==2.18.4
 six==1.11.0