diff --git a/pyproject.toml b/pyproject.toml
index 76677c9..c8cc4f9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,4 +6,6 @@ requires-python = ">=3.11"
 [dependency-groups]
 dev = [
     "pytest>=8",
+    "jsonschema>=4",
+    "pyyaml>=6",
 ]
diff --git a/tests/test_metadata.py b/tests/test_metadata.py
new file mode 100644
index 0000000..533b0eb
--- /dev/null
+++ b/tests/test_metadata.py
@@ -0,0 +1,36 @@
+"""Validate every rpms/*/metadata.yaml against schema/metadata.json."""
+
+import json
+from pathlib import Path
+
+import jsonschema
+import pytest
+import yaml
+
+REPO_ROOT = Path(__file__).parent.parent
+SCHEMA_FILE = REPO_ROOT / "schema" / "metadata.json"
+RPMS_DIR = REPO_ROOT / "rpms"
+
+
+@pytest.fixture(scope="session")
+def schema():
+    with open(SCHEMA_FILE) as f:
+        return json.load(f)
+
+
+def metadata_files():
+    return sorted(RPMS_DIR.glob("*/metadata.yaml"))
+
+
+@pytest.mark.parametrize("metadata_file", metadata_files(), ids=lambda p: p.parent.name)
+def test_metadata_valid(metadata_file, schema):
+    with open(metadata_file) as f:
+        data = yaml.safe_load(f)
+
+    validator = jsonschema.Draft7Validator(schema)
+    errors = sorted(validator.iter_errors(data), key=str)
+
+    assert not errors, "\n".join(
+        f"  {'.'.join(str(p) for p in e.absolute_path) or '(root)'}: {e.message}"
+        for e in errors
+    )