diff --git a/CHANGELOG.md b/CHANGELOG.md
index 06522a93f..74f3488ff 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,8 @@ FEATURES:
 
 * New globally available template function: `uuid`. Generates a new random
   UUID.
+* New globally available template function: `isotime`. Generates the
+  current time in ISO standard format.
 
 IMPROVEMENTS: