diff --git a/generator/build.gradle b/generator/build.gradle
index 1968b44..bac054d 100644
--- a/generator/build.gradle
+++ b/generator/build.gradle
@@ -21,3 +21,10 @@ test {
         events "passed", "skipped", "failed"
     }
 }
+
+compileKotlin {
+    kotlinOptions.jvmTarget = 11
+}
+compileTestKotlin {
+    kotlinOptions.jvmTarget = 11
+}
diff --git a/pojos/build.gradle b/pojos/build.gradle
index 020aaee..4c9967b 100644
--- a/pojos/build.gradle
+++ b/pojos/build.gradle
@@ -8,3 +8,10 @@ plugins {
 dependencies {
     implementation "org.jetbrains.kotlinx:kotlinx-serialization-json:1.3.0"
 }
+
+compileKotlin {
+    kotlinOptions.jvmTarget = 11
+}
+compileTestKotlin {
+    kotlinOptions.jvmTarget = 11
+}