diff --git a/pyproject.toml b/pyproject.toml
index bfcd6468..54cf4e8f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -67,7 +67,7 @@ docs = [
     "mkdocs-render-swagger-plugin==0.1.2",
     "mkdocs_gen_files>=0.5.0,<0.7",
     "mkdocstrings[python]>=0.24,<1.1",
-    "pymdown-extensions>=10.7.1,<11",
+    "pymdown-extensions>=10.7.1,<12",
 ]
 examples = [
     "jupyter>=1.0.0,<2",