diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 00000000..a640f38c
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,78 @@
+name: CI
+
+on:
+  pull_request:
+    branches:
+      - master
+  push:
+    branches:
+      - master
+
+env:
+  RUSTFLAGS: -Dwarnings
+  RUST_BACKTRACE: 1
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install Rust
+        run: rustup update stable
+      - run: cargo test --all-features --workspace
+      - run: cargo build --all-features --all-targets --workspace
+
+  no-std:
+    strategy:
+      matrix:
+        target:
+          # TODO: Currently, valuable cannot build with targets that do not have atomic CAS.
+          #       We should port https://github.com/rust-lang/futures-rs/pull/2400.
+          # - thumbv6m-none-eabi
+          - thumbv7m-none-eabi
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install Rust
+        run: rustup update stable
+      - run: rustup target add ${{ matrix.target }}
+      # TODO: Currently, valuable cannot build without `alloc` feature
+      #       because `Debug` impl of `dyn Enumerable` uses `format!` macro.
+      # - run: cargo build --target ${{ matrix.target }} --no-default-features
+      #   working-directory: valuable
+      # - run: cargo build --target ${{ matrix.target }} --no-default-features --features derive
+      #   working-directory: valuable
+      - run: cargo build --target ${{ matrix.target }} --no-default-features --features alloc
+        working-directory: valuable
+      - run: cargo build --target ${{ matrix.target }} --no-default-features --features alloc,derive
+        working-directory: valuable
+
+  # TODO: Currently, valuable cannot build without `alloc` feature
+  #       because `Debug` impl of `dyn Enumerable` uses `format!` macro.
+  # features:
+  #   runs-on: ubuntu-latest
+  #   steps:
+  #     - uses: actions/checkout@v2
+  #     - name: Install Rust
+  #       run: rustup update stable
+  #     - name: Install cargo-hack
+  #       run: cargo install cargo-hack
+  #     - run: cargo hack build --workspace --feature-powerset --no-dev-deps
+
+  fmt:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install Rust
+        run: rustup update stable
+      - run: cargo fmt --all -- --check
+
+  docs:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install Rust
+        run: rustup update nightly && rustup default nightly
+      - run: cargo doc --no-deps --all-features
+        env:
+          RUSTDOCFLAGS: -Dwarnings
diff --git a/valuable/benches/structable.rs b/valuable/benches/structable.rs
index 127eece5..2eb4be7b 100644
--- a/valuable/benches/structable.rs
+++ b/valuable/benches/structable.rs
@@ -24,15 +24,16 @@ static FIELDS: &[NamedField<'static>] = &[
 
 impl Structable for HelloWorld {
     fn definition(&self) -> StructDef<'_> {
-        StructDef {
-            name: "HelloWorld",
-            static_fields: FIELDS,
-            is_dynamic: false,
-        }
+        StructDef::new("HelloWorld", Fields::NamedStatic(FIELDS), false)
+    }
+}
+
+impl Valuable for HelloWorld {
+    fn as_value(&self) -> Value<'_> {
+        Value::Structable(self)
     }
 
     fn visit(&self, v: &mut dyn Visit) {
-        let definition = self.definition();
         v.visit_named_fields(&NamedValues::new(
             FIELDS,
             &[
@@ -52,7 +53,10 @@ fn criterion_benchmark(c: &mut Criterion) {
 
     let hello_world = black_box(HelloWorld::default());
     let structable = &hello_world as &dyn Structable;
-    let f = &structable.definition().static_fields()[5];
+    let f = match structable.definition().fields() {
+        Fields::NamedStatic(fields) => &fields[5],
+        _ => unreachable!(),
+    };
 
     struct Sum(usize, &'static NamedField<'static>);