diff --git a/toarstats/trends/__init__.py b/toarstats/trends/__init__.py
index 47d89bc5a3a0996228936a541fbe0514a1033801..75adc51c38e001abd778206fd5ef0c4fb395a9b1 100644
--- a/toarstats/trends/__init__.py
+++ b/toarstats/trends/__init__.py
@@ -2,3 +2,8 @@
 
 This subpackage contains trend analysis tools for time series.
 """
+
+from toarstats.trends.interface import calculate_trend
+
+
+__all__ = ["calculate_trend"]