diff --git a/book-src/intro.md b/book-src/intro.md
index eb77a86..baef952 100644
--- a/book-src/intro.md
+++ b/book-src/intro.md
@@ -7,7 +7,7 @@
 
 [Zig cookbook](https://github.com/zigcc/zig-cookbook) is a collection of simple Zig programs that demonstrate good practices to accomplish common programming tasks.
 
-> - Main branch tracks Zig 0.13.0 and master, and ensured on Linux and macOS via GitHub actions.
+> - Main branch tracks Zig 0.13.0 and master, and are tested on Linux and macOS via GitHub actions.
 > - Zig 0.11.0 support can be found in [here](https://github.com/zigcc/zig-cookbook/tree/0.11.0).
 
 # How to use