diff --git a/build.zig b/build.zig
index 9b2b6b5..db55d2e 100644
--- a/build.zig
+++ b/build.zig
@@ -19,6 +19,28 @@ pub fn build(b: *std.Build) void {
 
     const maxminddb_upstream = b.dependency("maxminddb", .{});
 
+    // Build sunriset as a static library
+    const sunriset = b.addLibrary(.{
+        .name = "sunriset",
+        .linkage = .static,
+        .root_module = b.createModule(.{
+            .target = target,
+            .optimize = optimize,
+            .link_libc = true,
+        }),
+    });
+
+    sunriset.addIncludePath(b.path("libs/sunriset"));
+    sunriset.addCSourceFiles(.{
+        .root = b.path("libs/sunriset"),
+        .files = &.{
+            "sunriset.c",
+        },
+        .flags = &.{ "-D_DEFAULT_SOURCE", "-DSUNRISET_NO_MAIN" },
+    });
+    sunriset.linkLibC();
+    sunriset.linkSystemLibrary("m");
+
     // Build phoon as a static library
     const phoon = b.addLibrary(.{
         .name = "phoon",
@@ -98,9 +120,11 @@ pub fn build(b: *std.Build) void {
     exe.root_module.addOptions("build_options", build_options);
     exe.root_module.addIncludePath(maxminddb_upstream.path("include"));
     exe.root_module.addIncludePath(b.path("libs/phoon_14Aug2014"));
+    exe.root_module.addIncludePath(b.path("libs/sunriset"));
     exe.root_module.addConfigHeader(maxminddb_config);
     exe.linkLibrary(maxminddb);
     exe.linkLibrary(phoon);
+    exe.linkLibrary(sunriset);
     exe.linkLibC();
 
     b.installArtifact(exe);
@@ -135,9 +159,11 @@ pub fn build(b: *std.Build) void {
     tests.root_module.addOptions("build_options", test_options);
     tests.root_module.addIncludePath(maxminddb_upstream.path("include"));
     tests.root_module.addIncludePath(b.path("libs/phoon_14Aug2014"));
+    tests.root_module.addIncludePath(b.path("libs/sunriset"));
     tests.root_module.addConfigHeader(maxminddb_config);
     tests.linkLibrary(maxminddb);
     tests.linkLibrary(phoon);
+    tests.linkLibrary(sunriset);
     tests.linkLibC();
 
     const run_tests = b.addRunArtifact(tests);
diff --git a/build.zig.zon b/build.zig.zon
index 4bca8e2..5ed0912 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -19,6 +19,7 @@
             .hash = "zeit-0.6.0-5I6bk36tAgATpSl9wjFmRPMqYN2Mn0JQHgIcRNcqDpJA",
         },
         .phoon = .{ .path = "libs/phoon_14Aug2014" },
+        .sunriset = .{ .path = "libs/sunriset" },
     },
     .fingerprint = 0x710c2b57e81aa678,
     .minimum_zig_version = "0.15.2",