diff --git a/Group_4/Multiframe Approach/requirements.txt b/Group_4/Multiframe Approach/requirements.txt
index b4bd8d2a3..56a24c695 100644
--- a/Group_4/Multiframe Approach/requirements.txt	
+++ b/Group_4/Multiframe Approach/requirements.txt	
@@ -14,7 +14,7 @@ packaging==16.8
 pyparsing==2.2.0
 python-dateutil==2.6.0
 pytz==2017.2
-PyYAML==5.1
+PyYAML==5.4
 resampy==0.1.5
 scikit-learn==0.18.1
 scipy==0.19.0