diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 000000000..d846d3a2f
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,160 @@
+name: CI
+
+on:
+  pull_request:
+    branches:
+      - master
+  push:
+    branches:
+      - master
+
+env:
+  RUSTFLAGS: -Dwarnings
+  RUST_BACKTRACE: 1
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  # Check formatting
+  rustfmt:
+    name: rustfmt
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install Rust
+      run: rustup update stable && rustup default stable
+    - name: Check formatting
+      run: cargo fmt --all -- --check
+
+  # TODO
+  # # Apply clippy lints
+  # clippy:
+  #   name: clippy
+  #   runs-on: ubuntu-latest
+  #   steps:
+  #   - uses: actions/checkout@v2
+  #   - name: Apply clippy lints
+  #     run: cargo clippy --all-features
+
+  # This represents the minimum Rust version supported by
+  # Bytes. Updating this should be done in a dedicated PR.
+  #
+  # Tests are not run as tests may require newer versions of
+  # rust.
+  minrust:
+    name: minrust
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install Rust
+        run: rustup update 1.39.0 && rustup default 1.39.0
+      - name: Check
+        run: . ci/test-stable.sh check
+
+  # Stable
+  test:
+    name: test
+    strategy:
+      matrix:
+        os:
+          - ubuntu-latest
+          - macos-latest
+          - windows-latest
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install Rust
+        run: rustup update stable && rustup default stable
+      - name: Test
+        run: . ci/test-stable.sh test
+
+  # Nightly
+  nightly:
+    name: nightly
+    env:
+      # Pin nightly to avoid being impacted by breakage
+      RUST_VERSION: nightly-2019-09-25
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install Rust
+        run: rustup update $RUST_VERSION && rustup default $RUST_VERSION
+      - name: Test
+        run: . ci/test-stable.sh test
+
+  # Run tests on some extra platforms
+  cross:
+    name: cross
+    strategy:
+      matrix:
+        target:
+          - i686-unknown-linux-gnu
+          - armv7-unknown-linux-gnueabihf
+          - powerpc-unknown-linux-gnu
+          - powerpc64-unknown-linux-gnu
+          - wasm32-unknown-unknown
+    runs-on: ubuntu-16.04
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install Rust
+        run: rustup update stable && rustup default stable
+      - name: cross build --target ${{ matrix.target }}
+        run: |
+          cargo install cross
+          cross build --target ${{ matrix.target }}
+        if: matrix.target != 'wasm32-unknown-unknown'
+      # WASM support
+      - name: cargo build --target ${{ matrix.target }}
+        run: |
+          rustup target add ${{ matrix.target }}
+          cargo build --target ${{ matrix.target }}
+        if: matrix.target == 'wasm32-unknown-unknown'
+
+  # Sanitizers
+  tsan:
+    name: tsan
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install Rust
+        run: rustup update nightly && rustup default nightly
+      - name: TSAN / MSAN
+        run: . ci/tsan.sh
+
+  # Loom
+  loom:
+    name: loom
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install Rust
+        run: rustup update nightly && rustup default nightly
+      - name: Loom tests
+        run: RUSTFLAGS="--cfg loom -Dwarnings" cargo test --lib
+
+  publish_docs:
+    name: Publish Documentation
+    needs:
+      - rustfmt
+      # - clippy
+      - stable
+      - nightly
+      - minrust
+      - cross
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install Rust
+        run: rustup update stable && rustup default stable
+      - name: Build documentation
+        run: cargo doc --no-deps --all-features
+      - name: Publish documentation
+        run: |
+          cd target/doc
+          git init
+          git add .
+          git -c user.name='ci' -c user.email='ci' commit -m 'Deploy H2 API documentation'
+          git push -f -q https://git:${{ secrets.github_token }}@github.com/${{ github.repository }} HEAD:gh-pages
+        if: github.event_name == 'push' && github.event.ref == 'refs/heads/master' && github.repository == 'tokio-rs/bytes'
diff --git a/Cargo.toml b/Cargo.toml
index c3ba22860..2062926a5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -25,7 +25,7 @@ default = ["std"]
 std = []
 
 [dependencies]
-serde = { version = "1.0", optional = true, default-features = false, features = ["alloc"] }
+serde = { version = "1.0.60", optional = true, default-features = false, features = ["alloc"] }
 
 [dev-dependencies]
 serde_test = "1.0"
diff --git a/README.md b/README.md
index afc2ed21c..73c43abc8 100644
--- a/README.md
+++ b/README.md
@@ -3,12 +3,12 @@
 A utility library for working with bytes.
 
 [![Crates.io][crates-badge]][crates-url]
-[![Build Status][azure-badge]][azure-url]
+[![Build Status][ci-badge]][ci-url]
 
 [crates-badge]: https://img.shields.io/crates/v/bytes.svg
 [crates-url]: https://crates.io/crates/bytes
-[azure-badge]: https://dev.azure.com/tokio-rs/bytes/_apis/build/status/tokio-rs.bytes?branchName=master
-[azure-url]: https://dev.azure.com/tokio-rs/bytes/_build/latest?definitionId=3&branchName=master
+[ci-badge]: https://github.com/tokio-rs/bytes/workflows/CI/badge.svg
+[ci-url]: https://github.com/tokio-rs/bytes/actions
 
 [Documentation](https://docs.rs/bytes)
 
@@ -45,4 +45,3 @@ This project is licensed under the [MIT license](LICENSE).
 Unless you explicitly state otherwise, any contribution intentionally submitted
 for inclusion in `bytes` by you, shall be licensed as MIT, without any additional
 terms or conditions.
-
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
deleted file mode 100644
index a92c3c4bb..000000000
--- a/azure-pipelines.yml
+++ /dev/null
@@ -1,69 +0,0 @@
-trigger: ["master"]
-pr: ["master"]
-
-jobs:
-# Check formatting
-- template: ci/azure-rustfmt.yml
-  parameters:
-    name: rustfmt
-    rust_version: stable
-
-# Apply clippy lints
-# - template: ci/azure-clippy.yml
-#   parameters:
-#     name: clippy
-
-# This represents the minimum Rust version supported by
-# Bytes. Updating this should be done in a dedicated PR.
-#
-# Tests are not run as tests may require newer versions of
-# rust.
-- template: ci/azure-test-stable.yml
-  parameters:
-    name: minrust
-    rust_version: 1.39.0
-    cmd: check
-
-# Stable
-- template: ci/azure-test-stable.yml
-  parameters:
-    name: stable
-    cross: true
-    features:
-      - serde
-
-# Nightly
-- template: ci/azure-test-stable.yml
-  parameters:
-    name: nightly
-    # Pin nightly to avoid being impacted by breakage
-    rust_version: nightly-2019-09-25
-    benches: true
-
-# Run tests on some extra platforms
-- template: ci/azure-cross-compile.yml
-  parameters:
-    name: cross
-
-# Sanitizers
-- template: ci/azure-tsan.yml
-  parameters:
-    name: tsan
-    rust_version: nightly
-
-# Loom
-- template: ci/azure-loom.yml
-  parameters:
-    name: loom
-    rust_version: stable
-
-
-- template: ci/azure-deploy-docs.yml
-  parameters:
-    dependsOn:
-      - rustfmt
-      # - clippy
-      - stable
-      - nightly
-      - minrust
-      - cross
diff --git a/ci/azure-cross-compile.yml b/ci/azure-cross-compile.yml
deleted file mode 100644
index be46ca346..000000000
--- a/ci/azure-cross-compile.yml
+++ /dev/null
@@ -1,46 +0,0 @@
-parameters:
-  cmd: build
-  rust_version: stable
-
-jobs:
-- job: ${{ parameters.name }}
-  displayName: Cross
-  strategy:
-    matrix:
-      i686:
-        vmImage: ubuntu-16.04
-        target: i686-unknown-linux-gnu
-      armv7:
-        vmImage: ubuntu-16.04
-        target: armv7-unknown-linux-gnueabihf
-      powerpc:
-        vmImage: ubuntu-16.04
-        target: powerpc-unknown-linux-gnu
-      powerpc64:
-        vmImage: ubuntu-16.04
-        target: powerpc64-unknown-linux-gnu
-      wasm:
-        vmImage: ubuntu-16.04
-        target: wasm32-unknown-unknown
-  pool:
-    vmImage: $(vmImage)
-
-  steps:
-    - template: azure-install-rust.yml
-      parameters:
-        rust_version: ${{parameters.rust_version}}
-
-    - script: cargo install cross
-      displayName: Install cross
-      condition: not(eq(variables['target'], 'wasm32-unknown-unknown'))
-
-    - script: cross ${{ parameters.cmd }} --target $(target)
-      displayName: cross ${{ parameters.cmd }} --target $(target)
-      condition: not(eq(variables['target'], 'wasm32-unknown-unknown'))
-
-    # WASM support
-    - script: |
-        rustup target add $(target)
-        cargo build --target $(target)
-      displayName: cargo build --target $(target)
-      condition: eq(variables['target'], 'wasm32-unknown-unknown')
diff --git a/ci/azure-deploy-docs.yml b/ci/azure-deploy-docs.yml
deleted file mode 100644
index 52ac48fcd..000000000
--- a/ci/azure-deploy-docs.yml
+++ /dev/null
@@ -1,39 +0,0 @@
-parameters:
-  dependsOn: []
-
-jobs:
-- job: documentation
-  displayName: 'Deploy API Documentation'
-  condition: and(succeeded(), eq(variables['Build.SourceBranch'], 'refs/heads/master'))
-  pool:
-    vmImage: 'Ubuntu 16.04'
-  dependsOn:
-    - ${{ parameters.dependsOn }}
-  steps:
-  - template: azure-install-rust.yml
-    parameters:
-      rust_version: stable
-  - script: |
-      cargo doc --no-deps
-      cp -R target/doc '$(Build.BinariesDirectory)'
-    displayName: 'Generate Documentation'
-  - script: |
-      set -e
-
-      git --version
-      ls -la
-      git init
-      git config user.name 'Deployment Bot (from Azure Pipelines)'
-      git config user.email 'deploy@tokio-rs.com'
-      git config --global credential.helper 'store --file ~/.my-credentials'
-      printf "protocol=https\nhost=github.com\nusername=carllerche\npassword=%s\n\n" "$GITHUB_TOKEN" | git credential-store --file ~/.my-credentials store
-      git remote add origin https://github.com/tokio-rs/bytes
-      git checkout -b gh-pages
-      git add .
-      git commit -m 'Deploy Bytes API documentation'
-      git push -f origin gh-pages
-    env:
-      GITHUB_TOKEN: $(githubPersonalToken)
-    workingDirectory: '$(Build.BinariesDirectory)'
-    displayName: 'Deploy Documentation'
-
diff --git a/ci/azure-install-rust.yml b/ci/azure-install-rust.yml
deleted file mode 100644
index 02176592a..000000000
--- a/ci/azure-install-rust.yml
+++ /dev/null
@@ -1,33 +0,0 @@
-steps:
-  # Linux and macOS.
-  - script: |
-      set -e
-      curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain none
-      export PATH=$PATH:$HOME/.cargo/bin
-      rustup toolchain install $RUSTUP_TOOLCHAIN
-      rustup default $RUSTUP_TOOLCHAIN
-      echo "##vso[task.setvariable variable=PATH;]$PATH:$HOME/.cargo/bin"
-    env:
-      RUSTUP_TOOLCHAIN: ${{parameters.rust_version}}
-    displayName: "Install rust (*nix)"
-    condition: not(eq(variables['Agent.OS'], 'Windows_NT'))
-
-  # Windows.
-  - script: |
-      curl -sSf -o rustup-init.exe https://win.rustup.rs
-      rustup-init.exe -y --default-toolchain none
-      set PATH=%PATH%;%USERPROFILE%\.cargo\bin
-      rustup toolchain install %RUSTUP_TOOLCHAIN%
-      rustup default %RUSTUP_TOOLCHAIN%
-      echo "##vso[task.setvariable variable=PATH;]%PATH%;%USERPROFILE%\.cargo\bin"
-    env:
-      RUSTUP_TOOLCHAIN: ${{parameters.rust_version}}
-    displayName: "Install rust (windows)"
-    condition: eq(variables['Agent.OS'], 'Windows_NT')
-
-  # All platforms.
-  - script: |
-        rustup toolchain list
-        rustc -Vv
-        cargo -V
-    displayName: Query rust and cargo versions
diff --git a/ci/azure-loom.yml b/ci/azure-loom.yml
deleted file mode 100644
index 1db9c3afe..000000000
--- a/ci/azure-loom.yml
+++ /dev/null
@@ -1,15 +0,0 @@
-jobs:
-- job: ${{parameters.name}}
-  displayName: Loom tests
-  pool:
-    vmImage: ubuntu-16.04
-
-  steps:
-  - template: azure-install-rust.yml
-    parameters:
-      rust_version: ${{parameters.rust_version}}
-
-  - script: RUSTFLAGS="--cfg loom" cargo test --lib
-    displayName: RUSTFLAGS="--cfg loom" cargo test --lib
-
-
diff --git a/ci/azure-rustfmt.yml b/ci/azure-rustfmt.yml
deleted file mode 100644
index a0a133890..000000000
--- a/ci/azure-rustfmt.yml
+++ /dev/null
@@ -1,13 +0,0 @@
-jobs:
-# Check formatting
-- job: ${{ parameters.name }}
-  displayName: Check rustfmt
-  pool:
-    vmImage: ubuntu-16.04
-  steps:
-    - template: azure-install-rust.yml
-      parameters:
-        rust_version: ${{ parameters.rust_version }}
-    - script: |
-        cargo fmt --all -- --check
-      displayName: Check formatting
diff --git a/ci/azure-test-stable.yml b/ci/azure-test-stable.yml
deleted file mode 100644
index b3e614a7b..000000000
--- a/ci/azure-test-stable.yml
+++ /dev/null
@@ -1,50 +0,0 @@
-parameters:
-  cmd: test
-  rust_version: stable
-  features: []
-
-jobs:
-- job: ${{ parameters.name }}
-  displayName: ${{ parameters.displayName }}
-  strategy:
-    matrix:
-      Linux:
-        vmImage: ubuntu-16.04
-
-      ${{ if parameters.cross }}:
-        MacOS:
-          vmImage: macOS-10.14
-        Windows:
-          vmImage: vs2017-win2016
-  pool:
-    vmImage: $(vmImage)
-
-  steps:
-  - template: azure-install-rust.yml
-    parameters:
-      rust_version: ${{parameters.rust_version}}
-
-  # Run with default crate features
-  - script: cargo ${{ parameters.cmd }}
-    displayName: cargo ${{ parameters.cmd }}
-
-  # Run with each specified feature
-  - ${{ each feature in parameters.features }}:
-    - script: cargo ${{ parameters.cmd }} --features ${{ feature }}
-      displayName: cargo ${{ parameters.cmd }} --features ${{ feature }}
-
-  - ${{ if eq(parameters.cmd, 'test') }}:
-    - script: cargo doc --no-deps
-      displayName: cargo doc --no-deps
-
-  - ${{ if parameters.benches }}:
-    - script: cargo check --benches
-      displayName: Check benchmarks
-
-  # Run with all features
-  - script: cargo ${{ parameters.cmd }} --all-features
-    displayName: cargo ${{ parameters.cmd }} --all-features
-
-  # Run with no default features
-  - script: cargo check --no-default-features
-    displayName: cargo check --no-default-features
diff --git a/ci/azure-tsan.yml b/ci/azure-tsan.yml
deleted file mode 100644
index 198b187ab..000000000
--- a/ci/azure-tsan.yml
+++ /dev/null
@@ -1,26 +0,0 @@
-jobs:
-- job: ${{ parameters.name }}
-  displayName: TSAN
-  pool:
-    vmImage: ubuntu-16.04
-
-  steps:
-  - template: azure-install-rust.yml
-    parameters:
-      rust_version: ${{ parameters.rust_version }}
-
-  - script: |
-      set -e
-
-      export RUST_TEST_THREADS=1
-      export ASAN_OPTIONS="detect_odr_violation=0 detect_leaks=0"
-      export TSAN_OPTIONS="suppressions=`pwd`/ci/tsan"
-
-      # Run address sanitizer
-      RUSTFLAGS="-Z sanitizer=address" \
-      cargo test --target x86_64-unknown-linux-gnu --test test_bytes --test test_buf --test test_buf_mut
-
-      # Run thread sanitizer
-      RUSTFLAGS="-Z sanitizer=thread" \
-      cargo test --target x86_64-unknown-linux-gnu --test test_bytes --test test_buf --test test_buf_mut
-    displayName: TSAN / MSAN
diff --git a/ci/test-stable.sh b/ci/test-stable.sh
new file mode 100644
index 000000000..01a32f5a6
--- /dev/null
+++ b/ci/test-stable.sh
@@ -0,0 +1,27 @@
+#!/bin/bash
+
+set -ex
+
+cmd="${1:-test}"
+
+# Install cargo-hack for feature flag test
+cargo install cargo-hack
+
+# Run with each feature
+# * --each-feature includes both default/no-default features
+# * --optional-deps is needed for serde feature
+cargo hack "${cmd}" --each-feature --optional-deps
+# Run with all features
+cargo "${cmd}" --all-features
+
+cargo doc --no-deps --all-features
+
+if [[ "${RUST_VERSION}" == "nightly"* ]]; then
+    # Check benchmarks
+    cargo check --benches
+
+    # Check minimal versions
+    cargo clean
+    cargo update -Zminimal-versions
+    cargo check --all-features
+fi
diff --git a/ci/tsan.sh b/ci/tsan.sh
new file mode 100644
index 000000000..7e5b3be6d
--- /dev/null
+++ b/ci/tsan.sh
@@ -0,0 +1,15 @@
+#!/bin/bash
+
+set -ex
+
+export RUST_TEST_THREADS=1
+export ASAN_OPTIONS="detect_odr_violation=0 detect_leaks=0"
+export TSAN_OPTIONS="suppressions=$(pwd)/ci/tsan"
+
+# Run address sanitizer
+RUSTFLAGS="-Z sanitizer=address" \
+cargo test --target x86_64-unknown-linux-gnu --test test_bytes --test test_buf --test test_buf_mut
+
+# Run thread sanitizer
+RUSTFLAGS="-Z sanitizer=thread" \
+cargo test --target x86_64-unknown-linux-gnu --test test_bytes --test test_buf --test test_buf_mut