diff --git a/requirements.txt b/requirements.txt
index 379048e..53c4406 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ pygments-lexer-solidity==0.2.0
 pyparsing==2.2.0
 pytz==2018.4
 pytest==5.4.2
-PyYAML==4.2b1
+PyYAML==5.4
 requests==2.20.0
 six==1.11.0
 snowballstemmer==1.2.1