diff --git a/lunchable_primelunch/primelunch.py b/lunchable_primelunch/primelunch.py
index 9e28ab7..fa4729e 100644
--- a/lunchable_primelunch/primelunch.py
+++ b/lunchable_primelunch/primelunch.py
@@ -83,7 +83,7 @@ def df_to_models(
         List[LunchableModel]
         """
         array_df = df.copy()
-        array_df = array_df.replace(np.NaN, None)
+        array_df = array_df.replace(np.nan, None)
         model_array = array_df.to_dict(orient="records")
         return [model_type.model_validate(item) for item in model_array]