diff --git a/README.md b/README.md
index 9b6255fb91..38e617e6cb 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,7 @@ Box には以下のような特徴があります。
 ## Requirements
 
 - Java 25+
-- Paper 1.21.2+
+- Paper 26.2+
 
 ## Installation
 
diff --git a/bundle/src/main/resources/paper-plugin.yml b/bundle/src/main/resources/paper-plugin.yml
index 28a134c558..865a660d3e 100644
--- a/bundle/src/main/resources/paper-plugin.yml
+++ b/bundle/src/main/resources/paper-plugin.yml
@@ -3,7 +3,7 @@ version: '${projectVersion}'
 description: A Paper plugin to provide virtual containers that can store 2.1 billion items per item.
 main: net.okocraft.box.plugin.BoxPlugin
 bootstrapper: net.okocraft.box.bootstrap.BoxBootstrap
-api-version: '1.20.5'
+api-version: '26.2'
 folia-supported: true
 
 dependencies:
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 5ad001f4b8..d2ed09e81f 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -21,8 +21,8 @@ slf4j = "2.0.20"
 sqlite-jdbc = "3.53.4.0"
 
 # platform api
-paper = "26.3.build.140-beta"
-paper-javadoc = "26.1.2"
+paper = "26.2.build.129-stable"
+paper-javadoc = "26.2"
 
 # plugin api
 coreprotect = "24.1"