diff --git a/.gitattributes b/.gitattributes
index 68f710ed4a084..ee68ab3f433ed 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -16,6 +16,7 @@
 /sklearn/utils/arraybuilder.c -diff
 /sklearn/utils/arrayfuncs.c -diff
 /sklearn/utils/graph_shortest_path.c -diff
+/sklearn/utils/lgamma.c -diff
 /sklearn/utils/murmurhash.c -diff
 /sklearn/utils/seq_dataset.c -diff
 /sklearn/utils/sparsefuncs.c -diff