diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index e388f35..b1ba7a7 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -16,6 +16,33 @@ env:
   RUSTFLAGS: --deny warnings
 
 jobs:
+  coverage:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - uses: actions-rust-lang/setup-rust-toolchain@v1
+      with:
+        components: llvm-tools-preview
+
+    - uses: Swatinem/rust-cache@v2
+
+    - uses: taiki-e/install-action@v2
+      with:
+        tool: cargo-llvm-cov
+
+    - name: Generate coverage report
+      run: cargo llvm-cov --workspace --all-features --all-targets --lcov --output-path lcov.info
+
+    - name: Upload coverage reports to Codecov
+      uses: codecov/codecov-action@v5
+      with:
+        token: ${{ secrets.CODECOV_TOKEN }}
+        files: lcov.info
+        flags: unit
+        fail_ci_if_error: true
+
   lint:
     runs-on: ubuntu-latest
 
diff --git a/README.md b/README.md
index 62a044e..a18450b 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 ## vim-profiler 🕒
 
 [![CI](https://github.com/terror/vim-profiler/actions/workflows/ci.yaml/badge.svg?branch=master)](https://github.com/terror/zk/actions/workflows/ci.yaml)
+[![codecov](https://codecov.io/github/terror/vim-profiler/graph/badge.svg?token=5BJLERWSY1)](https://codecov.io/github/terror/vim-profiler)
 [![crates.io](https://shields.io/crates/v/vim-profiler.svg)](https://crates.io/crates/vim-profiler)
 [![dependency status](https://deps.rs/repo/github/terror/vim-profiler/status.svg)](https://deps.rs/repo/github/terror/vim-profiler)