http://www.ruby-lang.org/en/news/2016/11/21/ruby-2-3-3-released/
与 2.3.2 相比，多了四条 ChangeLog：
index afde8df..2982c96 100644
--- a/vendor/ruby-2.3.2/ChangeLog
+++ b/vendor/ruby-2.3.3/ChangeLog
@@ -1,3 +1,25 @@
+Mon Nov 21 16:55:15 2016 boshan <[email protected]>
+
+ * lib/tempfile.rb (Tempfile#initialize): [DOC] the first parameter
+ `basename` is optional and defaulted to an empty string since
+ [GH-523]. [Fix GH-1225]
+
+Sat Nov 19 14:06:07 2016 CHIKANAGA Tomoyuki <[email protected]>
+
+ * iseq.c (proc_dup): don't duplicate sym_procs. [Fix GH-1479]
+ [ruby-core:78100] [Bug #12927]
+ Based on the patch provided by Emiliano Ritiro.
+
+Sat Nov 19 11:48:47 2016 Nobuyoshi Nakada <[email protected]>
+
+ * iseq.c (iseqw_s_compile_file): deal with syntax error as well as
+ compile, and should not abort when rescued.
+
+Wed Nov 16 23:40:29 2016 CHIKANAGA Tomoyuki <[email protected]>
+
+ * vm_eval.c (vm_call0_body): refined module should not be skipped as
+ prepended. [Bug #12920]
+
