diff --git a/README.md b/README.md
index cb2ba34..859cb91 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@ GridDB WebAPI is developed using GridDB Java Client and [Spring Boot](https://sp
 
 Building of the library and execution of the sample programs have been checked in the following environment.
 - OS: Ubuntu 22.04(x64)
-- [GridDB Server](https://github.com/griddb/griddb): 5.8
+- [GridDB Server](https://github.com/griddb/griddb): 5.9
 
 ## QuickStart
 
diff --git a/common/build.gradle b/common/build.gradle
index 11b809d..9e9883b 100644
--- a/common/build.gradle
+++ b/common/build.gradle
@@ -12,7 +12,7 @@ sourceSets {
     }
 }
 
-def gridstoreVersion = '5.8.0'
+def gridstoreVersion = '5.9.0'
 sourceCompatibility = 1.8
  
 dependencies { 
diff --git a/webapi-ce/build.gradle b/webapi-ce/build.gradle
index 4fceded..c78c725 100644
--- a/webapi-ce/build.gradle
+++ b/webapi-ce/build.gradle
@@ -16,11 +16,11 @@ apply plugin: 'org.springframework.boot'
 apply plugin: 'io.spring.dependency-management'
 
 group = 'com.toshiba.mwcloud.gs.tools'
-version = '5.8.0'
+version = '5.9.0'
 sourceCompatibility = 1.8
 
-def gridstoreVersion = '5.8.0'
-def gridstoreJdbcVersion = '5.8.0'
+def gridstoreVersion = '5.9.0'
+def gridstoreJdbcVersion = '5.9.0'
 
 repositories {
     mavenCentral()