diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 6d4dfe9..4df42ef 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -12,20 +12,16 @@ jobs:
         os: ["ubuntu"]
     runs-on: ${{ matrix.os }}-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v2
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
         with:
           python-version: "3.10"
           cache: "pip"
-      - uses: actions-rs/toolchain@v1
-        with:
-          toolchain: stable
-          override: true
-          profile: minimal
-          components: llvm-tools-preview
+      - name: Rust setup
+        run: rustup toolchain install stable --profile minimal
       - name: Install cargo-llvm-cov
         uses: taiki-e/install-action@cargo-llvm-cov
-      - uses: Swatinem/rust-cache@v1
+      - uses: Swatinem/rust-cache@v2
         with:
           key: coverage-cargo-${{ matrix.os }}
         continue-on-error: true
@@ -45,7 +41,10 @@ jobs:
           maturin develop
           pytest tests --cov=foobar --cov-report lcov:python-coverage.lcov
           cargo llvm-cov report --lcov --output-path rust-coverage.lcov
-      - uses: codecov/codecov-action@v3
+      - name: Upload results to Codecov
+        uses: codecov/codecov-action@v4
         with:
           files: python-coverage.lcov,rust-coverage.lcov
           name: ${{ matrix.os }}
+          token: ${{ secrets.CODECOV_TOKEN }}
+
diff --git a/README.md b/README.md
index 563c6d2..9b77985 100644
--- a/README.md
+++ b/README.md
@@ -17,8 +17,8 @@
 # rust-python-coverage
 Example PyO3 project with automated test coverage for Rust and Python
 
-[![CI](https://github.com/cjermain/rust-python-coverage/actions/workflows/CI.yml/badge.svg)](https://github.com/cjermain/rust-python-coverage/actions/workflows/CI.yml)
-[![codecov](https://codecov.io/gh/cjermain/rust-python-coverage/branch/main/graph/badge.svg?token=NWHDJ22L8I)](https://codecov.io/gh/cjermain/rust-python-coverage)
+[![CI](https://github.com/Michael-J-Ward/rust-python-coverage/actions/workflows/CI.yml/badge.svg)](https://github.com/Michael-J-Ward/rust-python-coverage/actions/workflows/CI.yml)
+[![codecov](https://codecov.io/github/Michael-J-Ward/rust-python-coverage/graph/badge.svg?token=K4T59SGTQX)](https://codecov.io/github/Michael-J-Ward/rust-python-coverage)
 
 This repository shows how to set up a continuous-integration job for measuring
 coverage over a project using [PyO3](https://github.com/PyO3/pyo3). Based on
@@ -129,8 +129,7 @@ The last step of this process happens in the CI, where we upload both coverage
 files to CodeCov. [Merging reports](https://docs.codecov.com/docs/merging-reports)
 is an automatic feature of CodeCov, so the final view shows the combined view.
 
-https://codecov.io/gh/cjermain/rust-python-coverage
-
+https://codecov.io/github/Michael-J-Ward/rust-python-coverage
 
 ## Appendix
 
diff --git a/src/lib.rs b/src/lib.rs
index 728b780..0fc793d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,4 +1,3 @@
-
 use pyo3::prelude::*;
 
 /// Returns the sum of two numbers (only Rust)