diff --git a/README.md b/README.md
index be2c66b..c969155 100644
--- a/README.md
+++ b/README.md
@@ -380,8 +380,8 @@ A list of ZetaSQL specifications and features supported by go-zetasqlite.
 - [x] DATE
 - [x] DATE_ADD
 - [x] DATE_SUB
-- [ ] DATE_DIFF
-- [ ] DATE_TRUNC
+- [x] DATE_DIFF
+- [x] DATE_TRUNC
 - [ ] DATE_FROM_UNIX_DATE
 - [ ] FORMAT_DATE
 - [ ] LAST_DAY