update changelog

mixphix · mixphix · commit c321fed39410 · 2024-08-25T08:27:51.000-04:00
diff --git a/changelog.md b/changelog.md
@@ -2,6 +2,8 @@
 
 ## Upcoming
 
+  * Add Unit monoid with `seq`
+    ([#18](https://github.com/haskell/deepseq/issues/18), [#105](https://github.com/haskell/deepseq/issues/105))
 
 
 ## 1.5.0.0
