diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
new file mode 100644
index 0000000000000000000000000000000000000000..424e34f423052ba8ffdbac7e4f9c62a1a56826d0
--- /dev/null
+++ b/.github/workflows/macos.yml
@@ -0,0 +1,65 @@
+name: continuous-intergration/macos
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+    tags:
+      - v*
+    paths-ignore:
+      - 'README.md'
+      - '.gitlab-ci.yml'
+
+jobs:
+  check:
+    name: build-contract-template
+    strategy:
+      matrix:
+        platform:
+          - macos-latest
+        toolchain:
+          - nightly
+    runs-on: ${{ matrix.platform }}
+    env:
+      RUST_BACKTRACE: full
+    steps:
+
+      - name: Checkout sources & submodules
+        uses: actions/checkout@master
+        with:
+          fetch-depth: 1
+          submodules: recursive
+
+      - uses: actions/setup-node@v2
+      - run: npm install wasm-opt -g
+
+      - name: Install toolchain
+        id: toolchain
+        uses: actions-rs/toolchain@master
+        with:
+          profile: minimal
+          toolchain: ${{ matrix.toolchain }}
+          components: rust-src
+          override: true
+
+      - name: Rust Cache
+        uses: Swatinem/rust-cache@v1.2.0
+
+      - name: Build contract template on ${{ matrix.platform }}-${{ matrix.toolchain }}
+        run: |
+          wasm-opt --version
+          cargo -vV
+          cargo run -- contract --version
+          cargo run -- contract new foobar
+          echo "[workspace]" >> foobar/Cargo.toml
+          cargo run -- contract build --manifest-path=foobar/Cargo.toml
+          cargo run -- contract check --manifest-path=foobar/Cargo.toml
+          cargo run -- contract test --manifest-path=foobar/Cargo.toml
+
+      - name: Run tests on {{ matrix.platform }}-${{ matrix.toolchain }}
+        # The tests take a long time in the GitHub Actions runner (~30 mins),
+        # hence we run them only on `master`.
+        if: github.ref == 'refs/heads/master'
+        run: |
+          cargo test --verbose --workspace --all-features
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index 3e16d3ca71a0590a9f8ce057352f7a6da83d0a8d..7b1376390ef52211371bb463c54b087c2c3f4874 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -9,6 +9,7 @@ on:
       - v*
     paths-ignore:
       - 'README.md'
+      - '.gitlab-ci.yml'
 
 jobs:
   check:
@@ -27,8 +28,8 @@ jobs:
       - uses: engineerd/configurator@v0.0.6
         with:
           name: "wasm-opt.exe"
-          url: "https://github.com/WebAssembly/binaryen/releases/download/version_101/binaryen-version_101-x86_64-windows.tar.gz"
-          pathInArchive: "binaryen-version_101/bin/wasm-opt.exe"
+          url: "https://github.com/WebAssembly/binaryen/releases/download/version_103/binaryen-version_103-x86_64-windows.tar.gz"
+          pathInArchive: "binaryen-/bin/wasm-opt.exe"
 
       - name: Checkout sources & submodules
         uses: actions/checkout@master
@@ -45,8 +46,8 @@ jobs:
           components: rust-src
           override: true
 
-      - name:                      Rust Cache
-        uses:                      Swatinem/rust-cache@v1.2.0
+      - name: Rust Cache
+        uses: Swatinem/rust-cache@v1.2.0
 
       - name: Build contract template on ${{ matrix.platform }}-${{ matrix.toolchain }}
         run: |