diff --git a/core/build.gradle.kts b/core/build.gradle.kts
index b59263c165..c8060df98c 100644
--- a/core/build.gradle.kts
+++ b/core/build.gradle.kts
@@ -14,10 +14,10 @@ kotlin {
 
     target {
         compilations.all {
-            kotlinOptions.jvmTarget = JavaVersion.VERSION_11.majorVersion
+            kotlinOptions.jvmTarget = JavaVersion.VERSION_1_8.toString()
         }
     }
 }
 java {
-    targetCompatibility = JavaVersion.VERSION_11
+    targetCompatibility = JavaVersion.VERSION_1_8
 }
diff --git a/desktop/build.gradle.kts b/desktop/build.gradle.kts
index 1eab8f0310..e99cf3e7f4 100644
--- a/desktop/build.gradle.kts
+++ b/desktop/build.gradle.kts
@@ -17,12 +17,12 @@ kotlin {
 
     target {
         compilations.all {
-            kotlinOptions.jvmTarget = JavaVersion.VERSION_11.majorVersion
+            kotlinOptions.jvmTarget = JavaVersion.VERSION_1_8.toString()
         }
     }
 }
 java {
-    targetCompatibility = JavaVersion.VERSION_11
+    targetCompatibility = JavaVersion.VERSION_1_8
 }
 
 dependencies {