diff --git a/requirements.txt b/requirements.txt
index d9393ab..7add9ef 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-PyYAML==3.10
+PyYAML==5.1
 distribute==0.6.28
 nltk>=2.0.4
 wsgiref==0.1.2