diff --git a/CHANGELOG.md b/CHANGELOG.md
index dca571b..fb74911 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 ## v0.7.0
 
-work in progress
+- test ifndef __USE_XOPEN_EXTENDED
 
 ## v0.6.0