diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index ef96993..bd14a86 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -16,6 +16,10 @@ jobs:
     env:
       DOTNET_NOLOGO: true
 
+    permissions:
+      actions: write
+      pull-requests: write
+
     steps:
     - uses: actions/checkout@v7
       with:
@@ -35,11 +39,8 @@ jobs:
         BuildNumber: ${{ github.run_number }}
         ApiKey: ${{ secrets.NUGETAPIKEY }}
 
-    - name: coveralls
-      uses: coverallsapp/github-action@v2
-      with:
-        github-token: ${{ secrets.GITHUB_TOKEN }}
-        file: TestResults/reports/lcov.info
+    - name: Report code coverage
+      uses: k1LoW/octocov-action@v1
 
     - name: Upload artifacts
       uses: actions/upload-artifact@v7
diff --git a/.octocov.yml b/.octocov.yml
new file mode 100644
index 0000000..495407d
--- /dev/null
+++ b/.octocov.yml
@@ -0,0 +1,17 @@
+# Configuration for octocov (https://github.com/k1LoW/octocov), which reports code coverage without an external service.
+# The coverage report of the default branch is stored as a GitHub Actions artifact, so that pull requests can show the difference.
+coverage:
+  paths:
+    - TestResults/reports/lcov.info
+comment:
+  if: is_pull_request
+  deletePrevious: true
+summary:
+  if: true
+report:
+  if: is_default_branch
+  datastores:
+    - artifact://${GITHUB_REPOSITORY}
+diff:
+  datastores:
+    - artifact://${GITHUB_REPOSITORY}
\ No newline at end of file
diff --git a/README.md b/README.md
index 68fec18..2052a0c 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,6 @@
 [![](https://img.shields.io/nuget/dt/FluentAssertions.Json.svg?label=nuget%20downloads)](https://www.nuget.org/packages/FluentAssertions.Json)
 [![](https://img.shields.io/librariesio/dependents/nuget/FluentAssertions.Json.svg?label=dependent%20libraries)](https://libraries.io/nuget/FluentAssertions.Json)
 ![](https://img.shields.io/badge/release%20strategy-githubflow-orange.svg)
-[![Coverage Status](https://coveralls.io/repos/github/fluentassertions/fluentassertions.json/badge.svg?branch=master)](https://coveralls.io/github/fluentassertions/fluentassertions.json?branch=master)
 
 ## *"With Fluent Assertions, the assertions look beautiful, natural and most importantly, extremely readable"* (by [Girish](https://twitter.com/girishracharya))