diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000..2203973
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,22 @@
+name: Build
+on:
+  push:
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [
+          linux-latest,
+          windows-latest,
+          macos-latest,
+        ]
+    steps:
+    - uses: actions/checkout@v2
+    - uses: goto-bus-stop/setup-zig@v1.3.0
+      with:
+        version: master
+
+    - name: Build and Unit Test
+      run: zig build test -Doptimize=ReleaseSmall
diff --git a/build.zig b/build.zig
index b9f2803..dacb224 100644
--- a/build.zig
+++ b/build.zig
@@ -2,7 +2,7 @@ const std = @import("std");
 const Builder = std.build.Builder;
 const Pkg = std.build.Pkg;
 const comptimePrint = std.fmt.comptimePrint;
-const FileSource = std.build.FileSource;
+const LazyPath = std.build.LazyPath;
 
 const microzig = @import("microzig");
 
@@ -17,7 +17,7 @@ pub const BuildOptions = struct {
 
 pub const PicoExecutableOptions = struct {
     name: []const u8,
-    source_file: FileSource,
+    source_file: LazyPath,
     optimize: std.builtin.OptimizeMode = .Debug,
 };
 
@@ -52,7 +52,7 @@ pub fn build(b: *Builder) !void {
         },
         .optimize = optimize,
     });
-    pio_tests.addIncludePath("src/hal/pio/assembler");
+    pio_tests.addIncludePath(.{ .path = "src/hal/pio/assembler" });
 
     const test_step = b.step("test", "run unit tests");
     test_step.dependOn(&b.addRunArtifact(pio_tests).step);
diff --git a/build.zig.zon b/build.zig.zon
index d8db2db..28bea9e 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -3,8 +3,8 @@
     .version = "0.0.0",
     .dependencies = .{
         .microzig = .{
-            .url = "https://github.com/ZigEmbeddedGroup/microzig/archive/9392fe0f7bddde26155c181ab80b70097b49c791.tar.gz",
-            .hash = "1220326148075cd017425e04356329c33c3e794d31a54bdafa46521fcfcc55b422a3",
+            .url = "https://github.com/ZigEmbeddedGroup/microzig/archive/d4a48f65fac24dcfe789d217a9154086b6a011e5.tar.gz",
+            .hash = "1220fd3ad4f6a88f111791cb80de1fc388d0a51114ab376f2bf8351cd176747fa303",
         },
         .args = .{
             .url = "https://github.com/MasterQ32/zig-args/archive/91d1e89fb89a4d01dec7c9aec95b0a324080ebcc.tar.gz",