diff --git a/build.gradle.kts b/build.gradle.kts
index 065735e..c92d020 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -48,8 +48,8 @@ application {
 }
 
 java {
-    sourceCompatibility = JavaVersion.VERSION_11
-    targetCompatibility = JavaVersion.VERSION_11
+    sourceCompatibility = JavaVersion.VERSION_1_8
+    targetCompatibility = JavaVersion.VERSION_1_8
     withSourcesJar()
 }
 
diff --git a/pom.xml b/pom.xml
index b893da8..9121609 100644
--- a/pom.xml
+++ b/pom.xml
@@ -40,7 +40,7 @@
       <dependency>
         <groupId>org.jetbrains.kotlin</groupId>
         <artifactId>kotlin-bom</artifactId>
-        <version>1.5.10</version>
+        <version>1.5.20</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>
@@ -50,7 +50,7 @@
     <dependency>
       <groupId>org.jetbrains.kotlin</groupId>
       <artifactId>kotlin-stdlib-jdk8</artifactId>
-      <version>1.5.10</version>
+      <version>1.5.20</version>
       <scope>runtime</scope>
     </dependency>
     <dependency>