diff --git a/tests/test_module_system.py b/tests/test_module_system.py
index ee6a432..e35dad5 100644
--- a/tests/test_module_system.py
+++ b/tests/test_module_system.py
@@ -238,6 +238,7 @@ class ModuleSystemTests(unittest.TestCase):
                 "notifications",
                 "addresses",
                 "dist_lists",
+                "templates",
                 "postbox",
                 "approvals",
                 "reporting",
@@ -3456,6 +3457,18 @@ finally:
             "version_min": "0.1.0",
             "version_max_exclusive": "0.2.0",
         }, modules["campaigns"]["requires_interfaces"])
+        self.assertIn({
+            "name": "templates.catalog",
+            "optional": True,
+            "version_min": "0.1.0",
+            "version_max_exclusive": "0.2.0",
+        }, modules["campaigns"]["requires_interfaces"])
+        self.assertIn({
+            "name": "templates.renderer",
+            "optional": True,
+            "version_min": "0.1.0",
+            "version_max_exclusive": "0.2.0",
+        }, modules["campaigns"]["requires_interfaces"])
         self.assertEqual(
             [
                 "files",
@@ -3463,6 +3476,7 @@ finally:
                 "notifications",
                 "addresses",
                 "dist_lists",
+                "templates",
                 "postbox",
                 "approvals",
                 "reporting",