diff --git a/compiler/gen_wasm/src/layout.rs b/compiler/gen_wasm/src/layout.rs
index ea11a9d546..8d7a472238 100644
--- a/compiler/gen_wasm/src/layout.rs
+++ b/compiler/gen_wasm/src/layout.rs
@@ -5,7 +5,7 @@ use crate::wasm_module::ValueType;
 use crate::{PTR_SIZE, PTR_TYPE, TARGET_INFO};
 
 /// Manually keep up to date with the Zig version we are using for builtins
-pub const BUILTINS_ZIG_VERSION: ZigVersion = ZigVersion::Zig8;
+pub const BUILTINS_ZIG_VERSION: ZigVersion = ZigVersion::Zig9;
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum ReturnMethod {