diff --git a/compose-destinations-codegen/build.gradle.kts b/compose-destinations-codegen/build.gradle.kts
index 2e69e1b8..e3b7d7bc 100644
--- a/compose-destinations-codegen/build.gradle.kts
+++ b/compose-destinations-codegen/build.gradle.kts
@@ -9,3 +9,9 @@ java {
     sourceCompatibility = JavaVersion.VERSION_1_8
     targetCompatibility = JavaVersion.VERSION_1_8
 }
+
+tasks.withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompile>().configureEach {
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
+}
diff --git a/compose-destinations-ksp/build.gradle.kts b/compose-destinations-ksp/build.gradle.kts
index 77989032..f4a77b44 100644
--- a/compose-destinations-ksp/build.gradle.kts
+++ b/compose-destinations-ksp/build.gradle.kts
@@ -4,8 +4,17 @@ plugins {
 
 apply(from = "${rootProject.projectDir}/publish.gradle")
 
+java {
+    sourceCompatibility = JavaVersion.VERSION_1_8
+    targetCompatibility = JavaVersion.VERSION_1_8
+}
+
 tasks.withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompile>().configureEach {
     kotlinOptions.freeCompilerArgs += "-opt-in=kotlin.RequiresOptIn"
+
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
 }
 
 dependencies {
diff --git a/playground-core/build.gradle.kts b/playground-core/build.gradle.kts
index e8259cee..6f573533 100644
--- a/playground-core/build.gradle.kts
+++ b/playground-core/build.gradle.kts
@@ -6,4 +6,10 @@ plugins {
 java {
     sourceCompatibility = JavaVersion.VERSION_1_8
     targetCompatibility = JavaVersion.VERSION_1_8
+}
+
+tasks.withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompile>().configureEach {
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
 }
\ No newline at end of file