diff --git a/requirements-dev.txt b/requirements-dev.txt
index 1c34e17..edb4a6a 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -6,4 +6,4 @@ cryptography
 
 # Development requirements
 pylint
-antsibull-docs>=2.20,<2.21
+antsibull-docs>=2.21,<2.22