diff --git a/.github/actions-rs/grcov.yml b/.github/actions-rs/grcov.yml
deleted file mode 100644
index 2ef4c15..0000000
--- a/.github/actions-rs/grcov.yml
+++ /dev/null
@@ -1,2 +0,0 @@
-output-type: lcov
-output-file: ./lcov.info
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index b486dd3..3f58e9e 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -14,23 +14,12 @@ env:
 jobs:
   publish:
     runs-on: ubuntu-latest
-    env:
-      PROTOC_VERSION: "3.20.3"
     if: github.event_name == 'release' && github.event.action == 'published'
     steps:
       - uses: actions/checkout@v3
-      - name: Setup | Rust
-        uses: ATiltedTree/setup-rust@v1
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
         with:
-          rust-version: nightly
-      - name: Install protoc
-        run: |
-          curl -OL https://github.com/protocolbuffers/protobuf/releases/download/v$PROTOC_VERSION/protoc-$PROTOC_VERSION-linux-x86_64.zip
-          sudo unzip -o protoc-$PROTOC_VERSION-linux-x86_64.zip -d /usr/local bin/protoc
-          sudo unzip -o protoc-$PROTOC_VERSION-linux-x86_64.zip -d /usr/local 'include/*'
-          rm -f protoc-$PROTOC_VERSION-linux-x86_64.zip
-      - name: Cache
-        uses: Swatinem/rust-cache@v2
+          toolchain: nightly
       - uses: katyo/publish-crates@v2
         with:
           registry-token: ${{ secrets.CARGO_REGISTRY_TOKEN }}
diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index cf51814..cbedd64 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -12,7 +12,6 @@ env:
 permissions:
   contents: write
   deployments: write
-  actions: read
 
 jobs:
   build:
@@ -23,48 +22,19 @@ jobs:
         with:
           comment_on_pr: false
       - uses: actions/checkout@v3
-      - name: Setup | Rust
-        uses: ATiltedTree/setup-rust@v1
+
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
         with:
-          rust-version: nightly
-      - name: Cache
-        uses: Swatinem/rust-cache@v2
+          toolchain: nightly
+
       - name: Build
-        run: cargo build --verbose
+        run: cargo build
       - name: Run tests
-        run: cargo test --verbose
-        env:
-          CARGO_INCREMENTAL: "0"
-          RUSTFLAGS: "-Zprofile -Ccodegen-units=1 -Cinline-threshold=0 -Clink-dead-code -Coverflow-checks=off -Cpanic=abort -Zpanic_abort_tests"
-          RUSTDOCFLAGS: "-Zprofile -Ccodegen-units=1 -Cinline-threshold=0 -Clink-dead-code -Coverflow-checks=off -Cpanic=abort -Zpanic_abort_tests"
-      - name: rust-grcov
-        uses: actions-rs/grcov@v0.1.6
-      - name: Codecov
-        uses: codecov/codecov-action@v3.1.4
-        with:
-          # Repository upload token - get it from codecov.io. Required only for private repositories
-          # token: # optional
-          # Specify whether the Codecov output should be verbose
-          verbose: true
-          fail_ci_if_error: true
+        run: cargo test
 
       - name: Run benches
         run: cargo bench
 
-      # - name: Continuous Benchmark
-      #   uses: benchmark-action/github-action-benchmark@v1.15.0
-      #   if: ${{ github.ref == 'refs/heads/main' }}
-      #   with:
-      #     name: Go Benchmark
-      #     tool: "cargo"
-      #     output-file-path: output.txt
-      #     github-token: ${{ secrets.CI_TOKEN }}
-      #     gh-repository: "github.com/ringsaturn/tzf-rs"
-      #     auto-push: true
-      #     comment-on-alert: true
-      #     fail-on-alert: false
-      #     benchmark-data-dir-path: "docs/"
-
       - name: Upload artifact
         uses: actions/upload-artifact@v3
         with:
diff --git a/Cargo.toml b/Cargo.toml
index 6717499..2be01d2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,6 +5,7 @@ edition = "2021"
 homepage = "http://github.com/ringsaturn/tzf-rs"
 keywords = ["timezone", "geo"]
 license-file = "LICENSE"
+license = "MIT"
 name = "tzf-rs"
 readme = "README.md"
 repository = "http://github.com/ringsaturn/tzf-rs"
diff --git a/README.md b/README.md
index e2de9a7..bb6210b 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# tzf-rs: a fast timezone finder for Rust. [![Rust](https://github.com/ringsaturn/tzf-rs/actions/workflows/rust.yml/badge.svg)](https://github.com/ringsaturn/tzf-rs/actions/workflows/rust.yml) [![Documentation](https://docs.rs/tzf-rs/badge.svg)](https://docs.rs/tzf-rs) [![codecov](https://codecov.io/gh/ringsaturn/tzf-rs/branch/main/graph/badge.svg?token=NQFIP9DD86)](https://codecov.io/gh/ringsaturn/tzf-rs)
+# tzf-rs: a fast timezone finder for Rust. [![Rust](https://github.com/ringsaturn/tzf-rs/actions/workflows/rust.yml/badge.svg)](https://github.com/ringsaturn/tzf-rs/actions/workflows/rust.yml) [![Documentation](https://docs.rs/tzf-rs/badge.svg)](https://docs.rs/tzf-rs)
 
 ![](https://github.com/ringsaturn/tzf/blob/gh-pages/docs/tzf-social-media.png?raw=true)
 
diff --git a/benches/finders.rs b/benches/finders.rs
index dfe08a9..9794a49 100644
--- a/benches/finders.rs
+++ b/benches/finders.rs
@@ -5,13 +5,13 @@ use rand::seq::SliceRandom;
 use tzf_rs::{DefaultFinder, Finder};
 
 lazy_static! {
-    static ref DEFAULTFINDER: DefaultFinder = DefaultFinder::new();
+    static ref DEFAULT_FINDER: DefaultFinder = DefaultFinder::new();
     static ref FINDER: Finder = Finder::new();
 }
 
 fn bench_default_finder_random_city(_i: usize) {
     let city = CITIES.choose(&mut rand::thread_rng()).unwrap();
-    let _ = DEFAULTFINDER.get_tz_name(city.lng, city.lat);
+    let _ = DEFAULT_FINDER.get_tz_name(city.lng, city.lat);
 }
 
 fn bench_finder_random_city(_i: usize) {
@@ -23,7 +23,7 @@ fn bench_finders(c: &mut Criterion) {
     let mut group = c.benchmark_group("Finders");
 
     // warmup
-    let _ = DEFAULTFINDER.get_tz_name(116.3883, 39.9289);
+    let _ = DEFAULT_FINDER.get_tz_name(116.3883, 39.9289);
     let _ = FINDER.get_tz_name(116.3883, 39.9289);
 
     let i = &0;