diff --git a/swiftemulator/mean_models/__init__.py b/swiftemulator/mean_models/__init__.py
index 876566d..01425dd 100644
--- a/swiftemulator/mean_models/__init__.py
+++ b/swiftemulator/mean_models/__init__.py
@@ -7,3 +7,4 @@
 from swiftemulator.mean_models.linear import LinearMeanModel
 from swiftemulator.mean_models.offset import OffsetMeanModel
 from swiftemulator.mean_models.polynomial import PolynomialMeanModel
+from swiftemulator.mean_models.fixed import FixedMeanModel