diff --git a/build_files/build_environment/CMakeLists.txt b/build_files/build_environment/CMakeLists.txt
index aa6b1cbe539..09dcc91ce08 100644
--- a/build_files/build_environment/CMakeLists.txt
+++ b/build_files/build_environment/CMakeLists.txt
@@ -31,6 +31,7 @@
 #
 # MAC OS X USAGE:
 #   Install with homebrew: brew install autoconf automake bison cmake libtool pkg-config yasm
+#   Additional requirements for macOS arm64: brew install flex
 #   Run "make deps" from main Blender directory
 #
 # LINUX USAGE: