diff --git a/README.md b/README.md
index 8d99cca..be0c488 100644
--- a/README.md
+++ b/README.md
@@ -43,9 +43,10 @@ Or, do steps 1 and 2, and open CMakeLists.txt in Visual Studio if `vcpkg integra
 #### Mac:
 1. `git clone https://github.com/uowuo/abaddon && cd abaddon`
 2. `brew install gtkmm3 nlohmann-json`
-3. `mkdir build && cd build`
-4. `cmake ..`
-5. `make`
+3. `git submodule update --init subprojects`
+4. `mkdir build && cd build`
+5. `cmake ..`
+6. `make`
 
 #### Linux:
 1. Install dependencies: `libgtkmm-3.0-dev`, `libcurl4-gnutls-dev`, and [nlohmann-json](https://github.com/nlohmann/json)