diff --git a/build.gradle b/build.gradle
index bf2742b..fc5fe9b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,8 +5,8 @@ buildscript {
         google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.0.2'
-        classpath 'com.github.axet:gradle-android-dx:0.1.3'
+        classpath 'com.android.tools.build:gradle:3.5.4'
+        classpath 'com.github.axet:gradle-android-dx:0.2.4'
     }
 }
 
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 622ab64..dc0711f 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.1.1-bin.zip
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-bin.zip
-zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME