diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3aa470dc..029d7c0b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,9 +1,9 @@
 **Version 0.1.2** (unreleased)
  - Fix program version that is displayed when running `oxipng -V`
- - Ensure `--quiet` mode is actually quiet (@SethDusek #20)
+ - Ensure `--quiet` mode is actually quiet (@SethDusek [#20](https://github.com/shssoichiro/oxipng/pull/20))
 
 **Version 0.1.1**
- - Fix `oxipng *` writing all input files to one output file (#15)
+ - Fix `oxipng *` writing all input files to one output file ([#15](https://github.com/shssoichiro/oxipng/issues/15))
 
 **Version 0.1.0**
  - Initial beta release