diff --git a/README.md b/README.md
index 2935e1c..495c4c2 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-Setup build environment
+Setup Android build environment
 
 1. Add Android rust targets
 
@@ -12,6 +12,10 @@ rustup target add x86_64-apple-darwin x86_64-unknown-linux-gnu x86_64-linux-andr
 export ANDROID_NDK_HOME=/home/<user>/Android/Sdk/ndk/<NDK version, ie. 21.4.7075529>
 ```
 
+Setup Swift build environment
+
+1. Install Swift, see ["Download Swift"](https://swift.org/download/) page
+
 Adding new structs and functions
 
 1. Create C safe Rust structs and related functions using safer-ffi