diff --git a/docs/conf.py b/docs/conf.py
index ce7d14f..b24592f 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -36,6 +36,7 @@
     "secrets",
     "analogio",
     "touchio",
+    "bitmaptools",
 ]
 
 intersphinx_mapping = {