diff --git a/CHANGELOG.md b/CHANGELOG.md
index 04eee2fb..1e0edd59 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog for Jikka
 
+## 2021-08-16: v5.3.0.0
+
+Many bugs are removed.
+
 ## 2021-08-07: v5.2.0.0
 
 Now we are fixing many bugs to use Jikka during contests!
diff --git a/package.yaml b/package.yaml
index 785c2b4d..d401607d 100644
--- a/package.yaml
+++ b/package.yaml
@@ -1,5 +1,5 @@
 name: Jikka
-version: 5.2.0.0
+version: 5.3.0.0
 github: "kmyk/Jikka"
 license: Apache
 author: "Kimiyuki Onaka"