diff --git a/gradle/convention/build.gradle.kts b/gradle/convention/build.gradle.kts
index 70ad88bc5836f49202043d7a1a781e0f1598fb04..1d775337d04369d1b8814eb642c39ed2426936e6 100644
--- a/gradle/convention/build.gradle.kts
+++ b/gradle/convention/build.gradle.kts
@@ -13,3 +13,9 @@ dependencies {
   implementation("com.google.devtools.ksp:com.google.devtools.ksp.gradle.plugin:1.6.10-1.0.4")
   implementation("com.android.tools.build:gradle:7.1.1")
 }
+
+configure<JavaPluginExtension> {
+  toolchain {
+    languageVersion.set(JavaLanguageVersion.of(8))
+  }
+}