diff --git a/build.zig b/build.zig
index e4b94c1..cd35753 100644
--- a/build.zig
+++ b/build.zig
@@ -29,6 +29,11 @@ pub fn build(b: *std.Build) void {
     // running `zig build`).
     b.installArtifact(lib);
 
+    const module = b.addModule("smithy", .{
+        .source_file = .{ .path = "src/smithy.zig" },
+    });
+    lib.addModule("smithy", module);
+
     // Creates a step for unit testing. This only builds the test executable
     // but does not run it.
     const main_tests = b.addTest(.{