diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 03aa794..1332d70 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -42,5 +42,11 @@ jobs:
       - name: Run tests
         run: uv run pytest
 
+      - name: Upload coverage to Coveralls
+        uses: coverallsapp/github-action@v2
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          path-to-lcov: ./coverage.lcov
+
       - name: Test production dependencies
         run: ./scripts/test-production-install.sh
diff --git a/.gitignore b/.gitignore
index 6b7bd2e..f20eca4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -47,6 +47,7 @@ htmlcov/
 .cache
 nosetests.xml
 coverage.xml
+coverage.lcov
 *.cover
 *.py.cover
 .hypothesis/
diff --git a/README.md b/README.md
index 829fdac..3f63e5e 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,10 @@
 # lazy-ecs
 
+[![PyPI version](https://img.shields.io/pypi/v/lazy-ecs)](https://pypi.org/project/lazy-ecs/)
+[![Python versions](https://img.shields.io/pypi/pyversions/lazy-ecs)](https://pypi.org/project/lazy-ecs/)
+[![License](https://img.shields.io/pypi/l/lazy-ecs)](https://github.com/vertti/lazy-ecs/blob/main/LICENSE)
+[![Coverage Status](https://coveralls.io/repos/github/vertti/lazy-ecs/badge.svg?branch=main)](https://coveralls.io/github/vertti/lazy-ecs?branch=main)
+
 A CLI tool for navigating AWS ECS clusters interactively.
 
 ![lazy-ecs demo](images/lazy-ecs-demo.jpg)
diff --git a/pyproject.toml b/pyproject.toml
index d6d8194..d28c9be 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,8 +38,8 @@ Documentation = "https://github.com/vertti/lazy-ecs#readme"
 [project.scripts]
 lazy-ecs = "lazy_ecs:main"
 
-[tool.uv]
-dev-dependencies = [
+[dependency-groups]
+dev = [
   "pytest==8.4.2",
   "pytest-cov==7.0.0",
   "pytest-mock==3.15.0",
@@ -48,6 +48,7 @@ dev-dependencies = [
   "pre-commit==4.3.0",
   "pyrefly==0.32.0",
   "boto3-stubs[ecs,logs,sts,cloudwatch]==1.40.30",
+  "coveralls>=4.0.1",
 ]
 
 [tool.ruff]
@@ -143,6 +144,7 @@ addopts = [
   "--cov=src/lazy_ecs",
   "--cov-report=term-missing",
   "--cov-report=html",
+  "--cov-report=lcov",
 ]
 
 [build-system]
diff --git a/uv.lock b/uv.lock
index e30da44..7f547d3 100644
--- a/uv.lock
+++ b/uv.lock
@@ -275,6 +275,20 @@ toml = [
     { name = "tomli", marker = "python_full_version <= '3.11'" },
 ]
 
+[[package]]
+name = "coveralls"
+version = "4.0.1"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "coverage", extra = ["toml"] },
+    { name = "docopt" },
+    { name = "requests" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/61/75/a454fb443eb6a053833f61603a432ffbd7dd6ae53a11159bacfadb9d6219/coveralls-4.0.1.tar.gz", hash = "sha256:7b2a0a2bcef94f295e3cf28dcc55ca40b71c77d1c2446b538e85f0f7bc21aa69", size = 12419, upload-time = "2024-05-15T12:56:14.297Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/63/e5/6708c75e2a4cfca929302d4d9b53b862c6dc65bd75e6933ea3d20016d41d/coveralls-4.0.1-py3-none-any.whl", hash = "sha256:7a6b1fa9848332c7b2221afb20f3df90272ac0167060f41b5fe90429b30b1809", size = 13599, upload-time = "2024-05-15T12:56:12.342Z" },
+]
+
 [[package]]
 name = "cryptography"
 version = "45.0.7"
@@ -325,6 +339,12 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/33/6b/e0547afaf41bf2c42e52430072fa5658766e3d65bd4b03a563d1b6336f57/distlib-0.4.0-py2.py3-none-any.whl", hash = "sha256:9659f7d87e46584a30b5780e43ac7a2143098441670ff0a49d5f9034c54a6c16", size = 469047, upload-time = "2025-07-17T16:51:58.613Z" },
 ]
 
+[[package]]
+name = "docopt"
+version = "0.6.2"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/a2/55/8f8cab2afd404cf578136ef2cc5dfb50baa1761b68c9da1fb1e4eed343c9/docopt-0.6.2.tar.gz", hash = "sha256:49b3a825280bd66b3aa83585ef59c4a8c82f2c8a522dbe754a8bc8d08c85c491", size = 25901, upload-time = "2014-06-16T11:18:57.406Z" }
+
 [[package]]
 name = "filelock"
 version = "3.19.1"
@@ -395,6 +415,7 @@ dependencies = [
 [package.dev-dependencies]
 dev = [
     { name = "boto3-stubs", extra = ["cloudwatch", "ecs", "logs", "sts"] },
+    { name = "coveralls" },
     { name = "moto" },
     { name = "pre-commit" },
     { name = "pyrefly" },
@@ -414,6 +435,7 @@ requires-dist = [
 [package.metadata.requires-dev]
 dev = [
     { name = "boto3-stubs", extras = ["ecs", "logs", "sts", "cloudwatch"], specifier = "==1.40.30" },
+    { name = "coveralls", specifier = ">=4.0.1" },
     { name = "moto", extras = ["ecs"], specifier = "==5.1.12" },
     { name = "pre-commit", specifier = "==4.3.0" },
     { name = "pyrefly", specifier = "==0.32.0" },