diff --git a/.trix/client-lib/__init__.py.hbs b/.trix/client-lib/__init__.py.hbs
index a124423..f25934c 100644
--- a/.trix/client-lib/__init__.py.hbs
+++ b/.trix/client-lib/__init__.py.hbs
@@ -28,6 +28,11 @@ ENVIRONMENT_SCHEMA: dict[str, Any] = json.loads(
     """{{{json tii.environment}}}"""
 )
 
+{{/if}}
+{{#if tii.components.schemas}}
+# Named types for the protocol's custom (record / variant) types.
+{{{componentTypes tii.components.schemas "python"}}}
+
 {{/if}}
 {{#each tii.transactions}}
 {{constantCase @key}}_TIR = TirEnvelope(