diff --git a/1.6.md b/1.6.md
index 643d581c..71a98d86 100644
--- a/1.6.md
+++ b/1.6.md
@@ -15,6 +15,9 @@ Thanks to the following people for contributing this release.
 **OS**<br \>
 - [ CRUX ] Also print the CRUX version. **[@onodera-punpun](https://github.com/onodera-punpun)**
 
+**CPU**<br \>
+- Don't print CPU cores if detection fails.
+
 **Public IP**<br \>
 - Made public IP function faster by using `dig` if available. **[@iandrewt](https://github.com/iandrewt)**