CHANGELOG.md in tcd_x12-1.7.0 vs CHANGELOG.md in tcd_x12-1.7.1

@@ -1,6 +1,9 @@
 # Change Log
 
+12/27/19 - release 1.7.1
+* Add `Gemfile.lock` to version control.
+
 12/27/19 - release 1.7.0
 * Add `custom_file` param to `X12.Parser.new` for using local XML definitions
 
 11/26/19 - release 1.6.3
 * Update 855.xml
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