diff --git a/support/mysql_enc_to_ruby.rb b/support/mysql_enc_to_ruby.rb
index 29ef0ea86..33c878885 100644
--- a/support/mysql_enc_to_ruby.rb
+++ b/support/mysql_enc_to_ruby.rb
@@ -43,6 +43,8 @@
   "geostd8"  => "NULL",
   "cp932"    => "Windows-31J",
   "eucjpms"  => "eucJP-ms",
+  "utf16le"  => "UTF-16LE",
+  "gb18030"  => "GB18030",
 }
 
 client     = Mysql2::Client.new(username: user, password: pass, host: host, port: port.to_i)
diff --git a/support/ruby_enc_to_mysql.rb b/support/ruby_enc_to_mysql.rb
index 734d4be90..72b68eb25 100644
--- a/support/ruby_enc_to_mysql.rb
+++ b/support/ruby_enc_to_mysql.rb
@@ -38,6 +38,8 @@
   "geostd8"  => nil,
   "cp932"    => "Windows-31J",
   "eucjpms"  => "eucJP-ms",
+  "utf16le"  => "UTF-16LE",
+  "gb18030"  => "GB18030",
 }
 
 puts <<-HEADER