diff --git a/src/test/regress/expected/.gitignore b/src/test/regress/expected/.gitignore
index 822f4b162..e560dfd00 100644
--- a/src/test/regress/expected/.gitignore
+++ b/src/test/regress/expected/.gitignore
@@ -8,6 +8,7 @@
 /multi_large_shardid.out
 /multi_master_delete_protocol.out
 /multi_outer_join.out
+/multi_outer_join_reference.out
 /multi_load_data.out
 /multi_load_large_records.out
 /multi_load_more_data.out
diff --git a/src/test/regress/sql/.gitignore b/src/test/regress/sql/.gitignore
index 516d9b7bb..73352d1a2 100644
--- a/src/test/regress/sql/.gitignore
+++ b/src/test/regress/sql/.gitignore
@@ -7,6 +7,7 @@
 /multi_large_shardid.sql
 /multi_master_delete_protocol.sql
 /multi_outer_join.sql
+/multi_outer_join_reference.sql
 /multi_load_data.sql
 /multi_load_large_records.sql
 /multi_load_more_data.sql