diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 73af864..bd79caf 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -33,8 +33,8 @@ jobs:
       - name: Install package with dev extras
         run: pip install -e ".[dev]"
 
-      - name: Run tests
-        run: pytest -q
+      - name: Run tests with coverage
+        run: pytest -q --cov=conclave --cov-report=term-missing --cov-fail-under=75
 
   lint:
     name: "ruff"
diff --git a/pyproject.toml b/pyproject.toml
index 2dbb47d..d5132c0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,6 +24,7 @@ dependencies = [
 dev = [
     "pytest>=8.0.0",
     "pytest-asyncio>=0.23.0",
+    "pytest-cov>=5.0.0",
 ]
 
 [project.scripts]
@@ -37,6 +38,19 @@ asyncio_mode = "auto"
 testpaths = ["tests"]
 pythonpath = ["."]
 
+[tool.coverage.run]
+source = ["conclave"]
+branch = true
+
+[tool.coverage.report]
+fail_under = 75
+show_missing = true
+exclude_lines = [
+    "pragma: no cover",
+    "if TYPE_CHECKING:",
+    "raise NotImplementedError",
+]
+
 [tool.ruff]
 line-length = 100
 target-version = "py311"