docs: update zig version required in readme

 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index d2f3a73..e1cc828 100644
--- a/README.md
+++ b/README.md
@@ -39,7 +39,7 @@ To compile river first ensure that you have the following dependencies
 installed. The "development" versions are required if applicable to your
 distribution.
 
-- [zig](https://ziglang.org/download/) 0.8
+- [zig](https://ziglang.org/download/) 0.9
 - wayland
 - wayland-protocols
 - [wlroots](https://gitlab.freedesktop.org/wlroots/wlroots) 0.15