diff --git a/README.md b/README.md
index 762d2557b4f6f1a1dff225ec344443ad0bcd277e..4418fa0a0c2bd1820e3955d29a19c11f3b9b3522 100644
--- a/README.md
+++ b/README.md
@@ -113,7 +113,7 @@ cd ..
 
 ```bash
 # install external dependencies
-brew install eigen xerces-c nlohmann_json qt
+brew install eigen xerces-c nlohmann-json qt
 # configure qt
 echo 'export PATH="/usr/local/opt/qt/bin:$PATH"' >> ~/.bash_profile