diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000..e5b3c54
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,108 @@
+name: Build
+
+on:
+  push:
+    branches:
+      - '*'
+  pull_request:
+
+jobs:
+  test:
+    name: Test
+
+    strategy:
+      matrix:
+        platform: [
+          ubuntu-latest,
+          macos-latest,
+          windows-latest
+        ]
+
+    runs-on: ${{ matrix.platform }}
+    timeout-minutes: 15
+
+    steps:
+    - name: "Checkout Repository"
+      uses: actions/checkout@v1
+
+    - name: Install Rustup (macOS)
+      run: |
+        curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
+        echo ::add-path::$HOME/.cargo/bin
+      if: runner.os == 'macOS'
+
+    - name: Set Rustup profile to minimal
+      run: rustup set profile minimal
+
+    - name: "Switch to Rust nightly"
+      run: rustup default nightly
+
+    - name: "Print Rust Version"
+      run: |
+        rustc -Vv
+        cargo -Vv
+
+    - name: "Install Rustup Components"
+      run: rustup component add rust-src llvm-tools-preview
+
+    - name: "Install build tools"
+      run: cargo install cargo-make
+
+    - name: "Deny Warnings"
+      run: cargo make build
+      env:
+        RUSTFLAGS: "-D warnings"
+
+    - name: Install QEMU (Linux)
+      run: |
+        sudo apt update
+        sudo apt install qemu-system-aarch64
+      if: runner.os == 'Linux'
+
+    - name: Install QEMU (macOS)
+      run: brew install qemu
+      if: runner.os == 'macOS'
+      env:
+        HOMEBREW_NO_AUTO_UPDATE: 1
+        HOMEBREW_NO_BOTTLE_SOURCE_FALLBACK: 1
+        HOMEBREW_NO_INSTALL_CLEANUP: 1
+
+    - name: Install Scoop (Windows)
+      run: |
+        Invoke-Expression (New-Object System.Net.WebClient).DownloadString('https://get.scoop.sh')
+        echo ::add-path::$HOME\scoop\shims
+      if: runner.os == 'Windows'
+      shell: pwsh
+
+    - name: Install QEMU (Windows)
+      run: scoop install qemu
+      if: runner.os == 'Windows'
+      shell: pwsh
+
+    - name: "Print QEMU Version"
+      run: qemu-system-aarch64 --version
+
+    - name: 'Build kernel'
+      run: cargo make build
+
+    # TODO: add tests runner
+
+  check_formatting:
+    name: "Check Formatting"
+    runs-on: ubuntu-latest
+    timeout-minutes: 2
+    steps:
+    - uses: actions/checkout@v1
+    - run: rustup toolchain install nightly --profile minimal --component rustfmt
+    - run: cargo +nightly fmt -- --check
+
+  clippy:
+    name: "Clippy"
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    steps:
+    - uses: actions/checkout@v1
+    - run: rustup toolchain install nightly --profile minimal --component clippy
+    - run: rustup component add rust-src llvm-tools-preview
+    - run: cargo install cargo-make
+    - run: cargo make clippy
diff --git a/Justfile b/Justfile
index 2589217..b955a30 100644
--- a/Justfile
+++ b/Justfile
@@ -4,7 +4,13 @@ qemu:
 device:
     cargo make sdcard
 
+build:
+    # Build default hw kernel
+    cargo make build
+
 clean:
     cargo make clean
     rm -f kernel8 kernel8.img
 
+clippy:
+    cargo make clippy
diff --git a/Makefile.toml b/Makefile.toml
index b290e72..f7efd8a 100644
--- a/Makefile.toml
+++ b/Makefile.toml
@@ -12,6 +12,8 @@ CARGO_MAKE_EXTEND_WORKSPACE_MAKEFILE = "false"
 
 DEFAULT_TARGET = "aarch64-vesper-metta"
 
+BUILD_STD = "-Zbuild-std=core,compiler_builtins,alloc"
+
 DEVICE_FEATURES = "noserial"
 QEMU_FEATURES = "qemu"
 
@@ -68,3 +70,7 @@ run_task = "do-on-members"
 [tasks.sdeject]
 env = { "CARGO_MAKE_MEMBER_TASK" = "sdeject" }
 run_task = "do-on-members"
+
+[tasks.clippy]
+env = { "CARGO_MAKE_MEMBER_TASK" = "clippy" }
+run_task = "do-on-members"
diff --git a/README.md b/README.md
index 13ed79d..3466d14 100644
--- a/README.md
+++ b/README.md
@@ -70,3 +70,5 @@ which are in turn based on [Raspi3 tutorials by bzt](https://github.com/bztsrc/r
 Various references from [OSDev Wiki](https://wiki.osdev.org/Raspberry_Pi_Bare_Bones) and [RaspberryPi.org manuals](https://www.raspberrypi.org/app/uploads/2012/02/BCM2835-ARM-Peripherals.pdf).
 
 [![Built with cargo-make](https://sagiegurari.github.io/cargo-make/assets/badges/cargo-make.svg)](https://sagiegurari.github.io/cargo-make)
+
+![Build](https://github.com/metta-systems/vesper/workflows/Build/badge.svg)
diff --git a/nucleus/Makefile.toml b/nucleus/Makefile.toml
index c5eec4c..e56f538 100644
--- a/nucleus/Makefile.toml
+++ b/nucleus/Makefile.toml
@@ -11,12 +11,12 @@ script = [
 
 [tasks.build]
 env = { "TARGET_FEATURES" = "" }
-args = ["build", "-Zbuild-std=core,compiler_builtins,alloc", "--target=${TARGET_JSON}", "--release", "--features=${TARGET_FEATURES}"]
+args = ["build", "${BUILD_STD}", "--target=${TARGET_JSON}", "--release", "--features=${TARGET_FEATURES}"]
 
 [tasks.build-qemu]
 env = { "TARGET_FEATURES" = "${QEMU_FEATURES}" }
 command = "cargo"
-args = ["build", "-Zbuild-std=core,compiler_builtins,alloc", "--target=${TARGET_JSON}", "--release", "--features=${TARGET_FEATURES}"]
+args = ["build", "${BUILD_STD}", "--target=${TARGET_JSON}", "--release", "--features=${TARGET_FEATURES}"]
 
 [tasks.qemu]
 dependencies = ["build-qemu", "kernel-binary"]
@@ -33,3 +33,7 @@ args = ["${KERNEL_BIN}", "/Volumes/BOOT/"]
 dependencies = ["sdcard"]
 command = "diskutil"
 args = ["unmount", "/Volumes/BOOT/"]
+
+[tasks.clippy]
+command = "cargo"
+args = ["clippy", "${BUILD_STD}", "--target=${TARGET_JSON}", "--", "-D", "warnings"]