Format the time string according to the precision of the time column

It is also necessary to format a time column like a datetime column.

1 files changed, 1 insertions, 1 deletions

diff --git a/Gemfile b/Gemfile
index 08aa842d2f..074db1b4eb 100644
--- a/Gemfile
+++ b/Gemfile
@@ -87,7 +87,7 @@ platforms :ruby do
   group :db do
     gem 'pg', '>= 0.18.0'
     gem 'mysql', '>= 2.9.0'
-    gem 'mysql2', '>= 0.3.13'
+    gem 'mysql2', '>= 0.3.18'
   end
 end