diff --git a/CHANGES.md b/CHANGES.md
index a24894c..1698bc3 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,9 @@
 # Changes
 
+## 0.4.1
+
+1. fix: missing `constants` in the rockspsec.
+
 ## 0.4.0
 
 1. Add a global field 'includeHostInEntrySpan', type 'boolean', mark the entrySpan include host/domain.