diff --git a/CHANGELOG.md b/CHANGELOG.md
index a11d130..2b1d0a4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,11 @@
 ## 1.3.0
 
 * Add `--exclude-migration-tests` option to ignore backward incompatible migration tests.
+* Do not falsely detect dropping `NOT NULL`  constraint.
+
+Internal change:
+
+* Differentiate different database vendors during SQL analysis.
 
 ## 1.2.0