diff --git a/.github/workflows/release-python.yml b/.github/workflows/release-python.yml
index a985d48..425a4f8 100644
--- a/.github/workflows/release-python.yml
+++ b/.github/workflows/release-python.yml
@@ -31,8 +31,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - name: Cache
-        uses: Swatinem/rust-cache@v2
       - uses: messense/maturin-action@v1
         with:
           manylinux: auto
@@ -49,8 +47,6 @@ jobs:
     runs-on: macos-latest
     steps:
       - uses: actions/checkout@v3
-      - name: Cache
-        uses: Swatinem/rust-cache@v2
       - uses: messense/maturin-action@v1
         with:
           command: build
@@ -66,8 +62,6 @@ jobs:
      runs-on: windows-latest
      steps:
        - uses: actions/checkout@v3
-       - name: Cache
-         uses: Swatinem/rust-cache@v2
        - uses: messense/maturin-action@v1
          with:
            command: build
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 7cde8c6..076bdb8 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -8,12 +8,6 @@ on:
     types:
       - published
 
-env:
-  CARGO_TERM_COLOR: always
-  # https://blog.rust-lang.org/2022/06/22/sparse-registry-testing.html
-  CARGO_UNSTABLE_SPARSE_REGISTRY: false
-  # https://doc.rust-lang.org/beta/cargo/reference/config.html#registriescrates-ioprotocol
-  CARGO_REGISTRIES_CRATES_IO_PROTOCOL: git
 
 jobs:
   publish:
@@ -22,8 +16,6 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - uses: actions-rust-lang/setup-rust-toolchain@v1
-        with:
-          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 b13cf61..e7b0dea 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -10,13 +10,6 @@ on:
       - "src/**"
       - ".github/workflows/rust.yaml"
 
-env:
-  CARGO_TERM_COLOR: always
-  # https://blog.rust-lang.org/2022/06/22/sparse-registry-testing.html
-  CARGO_UNSTABLE_SPARSE_REGISTRY: false
-  # https://doc.rust-lang.org/beta/cargo/reference/config.html#registriescrates-ioprotocol
-  CARGO_REGISTRIES_CRATES_IO_PROTOCOL: git
-
 jobs:
   build:
     runs-on: ubuntu-latest
@@ -25,11 +18,5 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - uses: actions-rust-lang/setup-rust-toolchain@v1
-        with:
-          toolchain: nightly
-      - name: Build
-        run: cargo build
-      - name: Run tests
-        run: cargo test
-      # - name: Run benches
-      #   run: cargo bench
+      - run: cargo build
+      - run: cargo test
diff --git a/.github/workflows/test-python.yml b/.github/workflows/test-python.yml
index 7135fa9..61a2ec2 100644
--- a/.github/workflows/test-python.yml
+++ b/.github/workflows/test-python.yml
@@ -15,12 +15,6 @@ defaults:
   run:
     working-directory: citiespy
 
-env:
-  # https://blog.rust-lang.org/2022/06/22/sparse-registry-testing.html
-  CARGO_UNSTABLE_SPARSE_REGISTRY: false
-  # https://doc.rust-lang.org/beta/cargo/reference/config.html#registriescrates-ioprotocol
-  CARGO_REGISTRIES_CRATES_IO_PROTOCOL: git
-
 jobs:
   ubuntu:
     runs-on: ubuntu-latest
@@ -33,8 +27,6 @@ jobs:
       - uses: actions/checkout@v3
 
       - uses: actions-rust-lang/setup-rust-toolchain@v1
-        with:
-          toolchain: nightly
 
       - name: Set up Python
         uses: actions/setup-python@v4
@@ -72,8 +64,6 @@ jobs:
       - uses: actions/checkout@v3
 
       - uses: actions-rust-lang/setup-rust-toolchain@v1
-        with:
-          toolchain: nightly
 
       - name: Set up Python
         uses: actions/setup-python@v4
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
new file mode 100644
index 0000000..c2bbf59
--- /dev/null
+++ b/rust-toolchain.toml
@@ -0,0 +1,2 @@
+[toolchain]
+channel = "nightly-2023-08-01"