diff --git a/setup.py b/setup.py
index 4148a92..23c1ddd 100644
--- a/setup.py
+++ b/setup.py
@@ -18,7 +18,7 @@
     "portray",
     "mkdocs-material-extensions>=1.0.3",
     "pygments>=2.19,<2.20",
-    "pymdown-extensions>=10.17,<10.18",
+    "pymdown-extensions>=10.18,<10.19",
 ]
 
 install_requires = [