fix changelog entries...
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 720b50d..be3aa6a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,8 @@
-## 2.10.0-nullsafety.1
+## 2.1.0-nullsafety.1
 
 * Update source_maps constraint.
 
-## 2.10.0-nullsafety
+## 2.1.0-nullsafety
 
 * Migrate to null safety.