diff --git a/dist/tools/bmp/bmp.py b/dist/tools/bmp/bmp.py
index b9b6454b865b..0b70d52045e4 100755
--- a/dist/tools/bmp/bmp.py
+++ b/dist/tools/bmp/bmp.py
@@ -9,6 +9,8 @@
 # @author   Maximilian Deubel <maximilian.deubel@ovgu.de>
 # @author   Bas Stottelaar <basstottelaar@gmail.com>
 
+# Dependencies are also listed in `requirements.txt` for compatibility reasons.
+#
 # /// script
 # requires-python = ">=3.10"
 # dependencies = [