From 5389c9813b1970a1a5cb2bc8f67b098d38a99d1d Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Tue, 16 Aug 2022 13:49:11 +0900
Subject: [PATCH] Update the excluding message for Psych [ci skip]

---
 test/excludes/Psych/TestDateTime.rb | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/test/excludes/Psych/TestDateTime.rb b/test/excludes/Psych/TestDateTime.rb
index 1188b4d4a6..63d99be809 100644
--- a/test/excludes/Psych/TestDateTime.rb
+++ b/test/excludes/Psych/TestDateTime.rb
@@ -1 +1,4 @@
-exclude(:test_new_datetime, "Psych loses the start date")
+exclude(:test_new_datetime, <<MSG)
+Undefined behavior of YAML spec, no definitions for pre Gregorian dates.
+https://github.com/yaml/yaml/issues/69
+MSG