diff --git a/push-down-test/functions.txt b/push-down-test/functions.txt
index 9801d16..bd939d8 100644
--- a/push-down-test/functions.txt
+++ b/push-down-test/functions.txt
@@ -115,3 +115,4 @@ adddate
 subdate
 date_add
 date_sub
+unix_timestamp