CHANGELOG.markdown in image_optim-0.31.1 vs CHANGELOG.markdown in image_optim-0.31.2

@@ -1,8 +1,12 @@
 # ChangeLog
 
 ## unreleased
 
+## v0.31.2 (2022-11-27)
+
+* Support jruby 9.4 [@toy](https://github.com/toy)
+
 ## v0.31.1 (2021-10-21)
 
 * Allow image_size 3 [@toy](https://github.com/toy)
 
 ## v0.31.0 (2021-10-03)