Changelog.md in httparty-0.20.0 vs Changelog.md in httparty-0.21.0

@@ -1,4 +1,10 @@
+## 0.21.0
+
+* [escape filename in the multipart/form-data Content-Disposition header](https://github.com/jnunemaker/httparty/commit/cdb45a678c43e44570b4e73f84b1abeb5ec22b8e)
+* [Fix request marshaling](https://github.com/jnunemaker/httparty/pull/767)
+* [Replace `mime-types` with `mini_mime`](https://github.com/jnunemaker/httparty/pull/769)
+
 ## 0.20.0
 
 Breaking changes
 
 * Require Ruby >= 2.3.0