diff --git a/AKModel/tests/test_json_export.py b/AKModel/tests/test_json_export.py
index aa2da3eedbc9f9a616724f14399aba0b4d2148b5..dfcdc58974dd23ef81f2768d7d45978011861ddb 100644
--- a/AKModel/tests/test_json_export.py
+++ b/AKModel/tests/test_json_export.py
@@ -47,7 +47,7 @@ class JSONExportTest(TestCase):
                 res = Resource.from_contents(json.load(ff))
             resources.append((res.id(), res))
         registry = Registry().with_resources(resources)
-        with (schema_base_path / "solver-input.json").open("r") as ff:
+        with (schema_base_path / "solver-input.schema.json").open("r") as ff:
             schema = json.load(ff)
         cls.json_export_validator = Draft202012Validator(
             schema=schema, registry=registry
diff --git a/schemas/solver-input.json b/schemas/solver-input.schema.json
similarity index 100%
rename from schemas/solver-input.json
rename to schemas/solver-input.schema.json
diff --git a/schemas/solver-output.json b/schemas/solver-output.schema.json
similarity index 100%
rename from schemas/solver-output.json
rename to schemas/solver-output.schema.json