diff --git a/src/libiso8601/100_leap.c b/src/libiso8601/100_leap.c
index c57dd09..0331d05 100644
--- a/src/libiso8601/100_leap.c
+++ b/src/libiso8601/100_leap.c
@@ -39,6 +39,7 @@ leap_second_days_table[] = {
     730119, /* 1998-12-31 */
     732676, /* 2005-12-31 */
     733772, /* 2008-12-31 */
+    735049, /* 2012-06-30 */
 };