diff --git a/requirements.txt b/requirements.txt
index 6b38f51ac..e22f33457 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ pypiwin32==219; sys_platform == 'win32' and python_version < '3.6'
 pypiwin32==223; sys_platform == 'win32' and python_version >= '3.6'
 PySocks==1.7.1
 python-dotenv==0.13.0
-PyYAML==5.3
+PyYAML==5.3.1
 requests==2.22.0
 texttable==1.6.2
 urllib3==1.25.9; python_version == '3.3'