diff --git a/docs/requirements.txt b/docs/requirements.txt
index 71d2b432..1caf91c1 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -9,4 +9,7 @@ anytree
 sphinx-copybutton
 
 # workaround because of https://github.com/miyakogi/m2r/issues/66
-mistune<2.0.0
\ No newline at end of file
+mistune<2.0.0
+
+# workaround because sphinxcontrib-openapi is missing setuptools --2025-03-07
+setuptools
\ No newline at end of file