diff --git a/requirements.txt b/requirements.txt
index 3895c6fc6..d165d8089 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,7 +36,8 @@ python-dateutil==2.9.0.post0
 python-docx==1.1.2
 python-pptx==1.0.2
 PyYAML==6.0.2
-whatthepatch==1.0.7
+whatthepatch==1.0.6; python_version < '3.9'
+whatthepatch==1.0.7; python_version >= '3.9'
 
 # Auxiliary
 # Tests and maintenance packages