diff --git a/requirements_dev.txt b/requirements_dev.txt
index 30dbdc2..237eb35 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -8,7 +8,7 @@ coverage==4.5.4
 pytest-aiohttp==0.3.0
 Sphinx==2.1.2
 cryptography==2.7
-PyYAML==5.1.2
+PyYAML==5.2
 pytest==5.0.1
 docutils==0.15.2
 pluggy==0.12.0
\ No newline at end of file