diff --git a/src/ageml/processing.py b/src/ageml/processing.py
index 4049011..883a29a 100644
--- a/src/ageml/processing.py
+++ b/src/ageml/processing.py
@@ -75,4 +75,4 @@ def cohen_d(group1, group2):
     
     # Calculate Cohen's d
     d = (mean1 - mean2) / pooled_std
-    return d
\ No newline at end of file
+    return d