changelog.md in sqlite3_ar_regexp-2.1.0 vs changelog.md in sqlite3_ar_regexp-2.2.0

@@ -1,4 +1,7 @@
+## 2.2.0
+ * Add support for ActiveRecord >= 5
+
 ## 2.1.0
  * Add support for ActiveRecord >= 4.2
 
 ## 2.0.0
  * Add support for ActiveRecord 4.0