diff --git a/Android/.idea/compiler.xml b/Android/.idea/compiler.xml
index 659bf43..b73660a 100644
--- a/Android/.idea/compiler.xml
+++ b/Android/.idea/compiler.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="CompilerConfiguration">
-    <bytecodeTargetLevel target="16" />
+    <bytecodeTargetLevel target="15" />
   </component>
 </project>
\ No newline at end of file
diff --git a/Android/.idea/gradle.xml b/Android/.idea/gradle.xml
index 625b371..8f4da00 100644
--- a/Android/.idea/gradle.xml
+++ b/Android/.idea/gradle.xml
@@ -7,7 +7,7 @@
         <option name="testRunner" value="GRADLE" />
         <option name="distributionType" value="DEFAULT_WRAPPED" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
-        <option name="gradleJvm" value="Android Studio java home" />
+        <option name="gradleJvm" value="openjdk-15" />
         <option name="modules">
           <set>
             <option value="$PROJECT_DIR$" />
diff --git a/Android/.idea/misc.xml b/Android/.idea/misc.xml
index 340b192..744d41e 100644
--- a/Android/.idea/misc.xml
+++ b/Android/.idea/misc.xml
@@ -44,7 +44,7 @@
       </value>
     </option>
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_X" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_15_PREVIEW" project-jdk-name="1.8" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">