diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7d755e1..1dd5aec 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-## 0.0.1
+## 1.0.0
 
 initialize gify package
 
diff --git a/example/pubspec.lock b/example/pubspec.lock
index 61b5ea1..f160143 100644
--- a/example/pubspec.lock
+++ b/example/pubspec.lock
@@ -141,7 +141,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "0.0.1"
+    version: "1.0.0"
   html:
     dependency: transitive
     description:
diff --git a/pubspec.yaml b/pubspec.yaml
index ae774c6..33fea52 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: gify
 description: Make GIF with video and images
-version: 0.0.1
+version: 1.0.0
 homepage: https://github.com/swimmingkiim/gify
 
 environment: