diff --git a/src/test/regress/bin/normalize.sed b/src/test/regress/bin/normalize.sed
index cd1866ea9..c982066cf 100644
--- a/src/test/regress/bin/normalize.sed
+++ b/src/test/regress/bin/normalize.sed
@@ -50,6 +50,9 @@ s/"(raw_events_second_user_id_value_1_key_|agg_events_user_id_value_1_agg_key_)[
 # ignore could not consume warnings
 /WARNING:  could not consume data from worker node/d
 
+# ignore page split with pg13
+/DEBUG:  concurrent ROOT page split/d
+
 # ignore WAL warnings
 /DEBUG: .+creating and filling new WAL file/d