diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 76f279324..d5ac20716 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -86,8 +86,7 @@ jobs:
           release-version: v1.10.2
           platform: ${{matrix.ninja-platform}}
 
-      # Build the Haskell lsp-test in its own step rather than as part of
-      # the integration test because tarpaulin will timeout
+      # Build the Haskell lsp-test in its own step so the stdout isn't swallowed by nextest.
       #
       # We don't currently run this test on Windows because I've not been able to
       # get GitHub actions to properly cache Haskell stuff there and it takes
@@ -96,8 +95,7 @@ jobs:
         if: matrix.os != 'windows-latest'
         run: stack build ditto-lsp-test
 
-      - name: Run tests (without coverage)
-        if: matrix.os != 'ubuntu-latest'
+      - name: Run tests
         uses: actions-rs/cargo@v1
         with:
           command: nextest
@@ -106,30 +104,6 @@ jobs:
           DITTO_BUILD_GIT_DESCRIBE: "0.0.0-test"
           DITTO_NINJA: ${{steps.install-ninja.outputs.which}}
 
-      - name: Install cargo-llvm-cov
-        # Only run tests with coverage if running on Linux
-        if: matrix.os == 'ubuntu-latest'
-        uses: taiki-e/install-action@cargo-llvm-cov
-
-      - name: Run tests (with coverage)
-        # Only run tests with coverage if running on Linux
-        if: matrix.os == 'ubuntu-latest'
-        uses: actions-rs/cargo@v1
-        with:
-          command: llvm-cov
-          args: --lcov --output-path lcov.info nextest --workspace
-        env:
-          DITTO_BUILD_GIT_DESCRIBE: "0.0.0-test"
-          DITTO_NINJA: ${{steps.install-ninja.outputs.which}}
-
-      - name: Upload coverage results to codecov.io 📡
-        if: matrix.os == 'ubuntu-latest'
-        uses: codecov/codecov-action@v3.1.0
-        with:
-          token: ${{secrets.CODECOV_TOKEN}}
-          files: lcov.info
-          fail_ci_if_error: true
-
   treefmt:
     name: treefmt 💅
     runs-on: ubuntu-latest
diff --git a/README.md b/README.md
index 171c4ea8c..e97b27dce 100644
--- a/README.md
+++ b/README.md
@@ -12,9 +12,6 @@
   <a href="https://github.com/ditto-lang/ditto/actions/workflows/security-audit.yaml">
     <img src="https://github.com/ditto-lang/ditto/actions/workflows/security-audit.yaml/badge.svg?branch=main" alt="Security audit status">
   </a>
-  <a href="https://codecov.io/gh/ditto-lang/ditto">
-    <img src="https://codecov.io/gh/ditto-lang/ditto/branch/main/graph/badge.svg?token=6TTRJO2KK0" alt="Code coverage badge"/>
-  </a>
   <br><br>
   <img src="./images/hello-ditto.svg" alt="Hello world program in ditto">
   <br>
diff --git a/codecov.yml b/codecov.yml
deleted file mode 100644
index bf08111d6..000000000
--- a/codecov.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-coverage:
-  status:
-    project:
-      default:
-        threshold: 1%
-comment:
-  # Only comment on PRs if there are coverage changes
-  require_changes: true
diff --git a/shell.nix b/shell.nix
index cd5e9fc09..cc01d6f2b 100644
--- a/shell.nix
+++ b/shell.nix
@@ -33,22 +33,6 @@ let
     doCheck = false;
   };
 
-  cargo-llvm-cov = pkgs.rustPlatform.buildRustPackage rec {
-    pname = "cargo-llvm-cov";
-    version = "0.5.0";
-    src = pkgs.fetchFromGitHub {
-      owner = "taiki-e";
-      repo = pname;
-      rev = "v${version}";
-      sha256 = "sha256-2O0MyL4SF/2AUpgWYUDWQ5dDpa84pwmnKGtAaWi5bwQ=";
-    };
-    cargoSha256 = "sha256-zQ1wgeKvc7q0pIx7ZWAQIayP/JVQGyFbLB3Iv81mbx0=";
-    cargoPatches = [
-      ./cargo-llvm-cov-cargo-lock.patch
-    ];
-    doCheck = false;
-  };
-
   # Don't forget to update .github/actions/setup-haskell
   stack = pkgs.symlinkJoin {
     name = "stack-with-system-ghc";
@@ -80,7 +64,6 @@ pkgs.mkShell {
     rustToolchain
     rust-analyzer
     pkgs.cargo-nextest
-    cargo-llvm-cov
     pkgs.cargo-watch
     pkgs.cargo-udeps
     pkgs.cargo-audit