diff --git a/build.zig b/build.zig
index 4cdde3b8fe..6d6a6eb4a8 100644
--- a/build.zig
+++ b/build.zig
@@ -510,8 +510,8 @@ pub fn build(b: *std.Build) !void {
         .skip_non_native = skip_non_native,
         .skip_libc = skip_libc,
         .use_llvm = use_llvm,
-        // I observed a value of 5136793600 on the M2 CI.
-        .max_rss = 5368709120,
+        // I observed a value of 5605064704 on the M2 CI.
+        .max_rss = 6165571174,
     }));
 
     const unit_tests_step = b.step("test-unit", "Run the compiler source unit tests");