diff --git a/requirements-dev.txt b/requirements-dev.txt
index 2649a745..9d2d909a 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -3,7 +3,8 @@ six >= 1.13
 python-dateutil >= 2.8.1
 requests >= 2.22
 futures >= 2.2; python_version < '3.0'
-PyYAML >= 6.0
+PyYAML >= 5.4; python_version < '3.0'
+PyYAML >= 6.0; python_version >= '3.6'
 
 Kodistubs ~= 18.0; python_version < '3.0'
 Kodistubs ~= 20.0; python_version >= '3.6'
@@ -18,7 +19,8 @@ flake8-import-order >= 0.18
 websocket-client >= 0.57.0
 
 types-requests >= 2.31
-types-PyYAML >= 6.0
+types-PyYAML >= 5.4; python_version < '3.0'
+types-PyYAML >= 6.0; python_version >= '3.6'
 types-six >= 1.13
 types-python-dateutil >= 2.8.1
 types-setuptools >= 44.1.1