diff --git a/CHANGELOG.md b/CHANGELOG.md
index e4ff97681c..2baea5fddc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# 7.56.0
+
+upgrade dependencies.
+
 # 7.55.0
 
 upgrade dependencies.
diff --git a/pubspec.yaml b/pubspec.yaml
index 13ad15a291..c3721169db 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -2,7 +2,7 @@
 # See: https://dart.dev/tools/pub/publishing
 
 name: libedax4dart
-version: 7.55.0
+version: 7.56.0
 description: Dart wrapper for libedax. With using libedax4dart, you can execute functions equivalent to edax.
 homepage: https://github.com/sensuikan1973/libedax4dart
 repository: https://github.com/sensuikan1973/libedax4dart