diff --git a/build.zig b/build.zig
index 11fe66e..3f07d63 100644
--- a/build.zig
+++ b/build.zig
@@ -42,6 +42,9 @@ pub fn build(b: *std.Build) void {
         .optimize = optimize,
     });
 
+    if (optimize == .ReleaseFast) {
+        main_exe.linkLibC();
+    }
     main_exe.root_module.addImport("httpz", httpz.module("httpz"));
     main_exe.root_module.addImport("metrics", metrics.module("metrics"));
     main_exe.root_module.addImport("zul", zul.module("zul"));
diff --git a/src/main.zig b/src/main.zig
index 442cf93..6d01443 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -1,3 +1,4 @@
+const builtin = @import("builtin");
 const std = @import("std");
 const log = std.log.scoped(.main);
 const zul = @import("zul");
@@ -37,10 +38,10 @@ pub fn logHandler(
 }
 
 pub fn main() !void {
-    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
+    var gpa: std.heap.GeneralPurposeAllocator(.{}) = .{};
     defer _ = gpa.deinit();
 
-    const allocator = gpa.allocator();
+    const allocator = if (builtin.mode == .ReleaseFast and !builtin.is_test) std.heap.c_allocator else gpa.allocator();
 
     var args = try zul.CommandLineArgs.parse(allocator);
     defer args.deinit();