CHANGELOG.markdown in image_optim-0.26.0 vs CHANGELOG.markdown in image_optim-0.26.1

@@ -1,8 +1,12 @@
 # ChangeLog
 
 ## unreleased
 
+## v0.26.1 (2017-12-14)
+
+* Require `'date'` which is used in parsing pngout version [toy/image_optim_pack#14](https://github.com/toy/image_optim_pack/issues/14) [@toy](https://github.com/toy)
+
 ## v0.26.0 (2017-11-13)
 
 * Enable `jpegrescan` by default after removing its dependency on `File::Slurp` and fixing for windows [#153](https://github.com/toy/image_optim/issues/153) [@toy](https://github.com/toy)
 * Extend description of `--verbose` flag [#152](https://github.com/toy/image_optim/issues/152) [@toy](https://github.com/toy)