diff --git a/build.gradle.kts b/build.gradle.kts
index a4929f1..093f0d8 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -2,6 +2,7 @@ import java.util.Properties
 
 plugins {
     kotlin("jvm") version "1.8.20"
+    java
     id("io.gitlab.arturbosch.detekt") version "1.21.0"
     `maven-publish`
 }
@@ -12,9 +13,15 @@ version = "2.0.5"
 allprojects {
     apply {
         plugin("kotlin")
+        plugin("java")
         plugin("io.gitlab.arturbosch.detekt")
     }
 
+    java {
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
+    }
+
     repositories {
         mavenCentral()
     }
@@ -58,6 +65,7 @@ val spacePassword = getLocalProperty("spacePassword")
 
 configure(subprojects) {
     apply(plugin = "maven-publish")
+    apply(plugin = "java")
 
     val subprojectName = this.name
 
diff --git a/gradle.properties b/gradle.properties
index 4a78f86..7ae4795 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -3,6 +3,6 @@ kotlin.code.style=official
 pluginName = Kotlin Test Framework With IJ
 platformType = IC
 platformVersion = 2022.2.5
-platformPlugins = Kotlin
+platformPlugins = Kotlin, com.intellij.java
 
 org.gradle.jvmargs = -XX:MaxMetaspaceSize=1g
diff --git a/ij/common/build.gradle.kts b/ij/common/build.gradle.kts
index ed440a0..0330cd3 100644
--- a/ij/common/build.gradle.kts
+++ b/ij/common/build.gradle.kts
@@ -3,6 +3,7 @@ version = rootProject.version
 
 plugins {
     id("org.jetbrains.intellij") version "1.15.0"
+    id("java")
 }
 
 fun properties(key: String) = providers.gradleProperty(key)
diff --git a/ij/java-psi/build.gradle.kts b/ij/java-psi/build.gradle.kts
index 1ca34e9..5e73e21 100644
--- a/ij/java-psi/build.gradle.kts
+++ b/ij/java-psi/build.gradle.kts
@@ -3,6 +3,7 @@ version = rootProject.version
 
 plugins {
     id("org.jetbrains.intellij") version "1.15.0"
+    id("java")
 }
 
 dependencies {