diff --git a/CHANGELOG.md b/CHANGELOG.md
index e964225..c22e1d0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,11 +1,11 @@
 # Changelog
 
 ## [Unreleased]
-- Upgrade project to JDK 17 from JDK 11
-- Configure Gradle build to explicitly specify JDK 17 requirements for better IDE integration
+- Upgrade project to JDK 21 from JDK 11
+- Configure Gradle build to explicitly specify JDK 21 requirements for better IDE integration
 - update dependencies
-- upgrade to gradle 8.4.14
-- upgrade to intellij 2024.3
+- upgrade to gradle 9.x
+- upgrade to intellij 2025.3
 
 ## [1.11.0]
 
diff --git a/build.gradle b/build.gradle
index e2dbed7..25f97c2 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,6 +1,6 @@
 plugins {
     id 'org.jetbrains.kotlin.jvm' version "2.3.21"
-    id 'org.jetbrains.intellij.platform' version '2.11.0'
+    id 'org.jetbrains.intellij.platform' version '2.14.0'
     id 'org.jetbrains.changelog' version '1.2.1'
 }
 
@@ -26,7 +26,7 @@ dependencies {
     implementation 'com.squareup:gifencoder:0.10.1'
 
     intellijPlatform {
-        create('IC', '2024.3')
+        intellijIdea('2025.3')
     }
 
     testImplementation('org.junit.jupiter:junit-jupiter:5.7.2')
@@ -38,7 +38,7 @@ dependencies {
 intellijPlatform {
     pluginConfiguration {
         ideaVersion {
-            sinceBuild.set('243')
+            sinceBuild.set('253')
         }
         changeNotes.set(provider({changelog.getLatest().toHTML()}))
     }
diff --git a/src/main/resources/META-INF/plugin.xml b/src/main/resources/META-INF/plugin.xml
index ef3c547..35813e0 100644
--- a/src/main/resources/META-INF/plugin.xml
+++ b/src/main/resources/META-INF/plugin.xml
@@ -8,7 +8,7 @@
      I am happy if you report issues, I am going to fix them.
     ]]></description>
 
-    <idea-version since-build="243"/>
+    <idea-version since-build="253"/>
 
     <depends>com.intellij.modules.lang</depends>