diff --git a/docs/CONTRIBUTING/Dependencies.md b/docs/CONTRIBUTING/Dependencies.md
index 61d411894..75b2daa08 100644
--- a/docs/CONTRIBUTING/Dependencies.md
+++ b/docs/CONTRIBUTING/Dependencies.md
@@ -69,6 +69,8 @@ brew install cmake qt5
 brew link qt5 --force
 ```
 
+You will also need `autotools`. That is usually available by default but might need to be explicitly installed with `brew install autotools`. 
+
 ## Android
 
 To build for Android, you must download components of the Android SDK, the Android NDK, and Java Development Kit.