diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 4a4c6f7..3e5ade8 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -4,9 +4,6 @@
     android:versionCode="2"
     android:versionName="0.2" >
 
-    <uses-sdk
-        android:minSdkVersion="16"
-        android:targetSdkVersion="17" />
     <uses-permission android:required="true" android:name="android.permission.INTERNET"/>
     <uses-permission android:required="true" android:name="android.permission.RECORD_AUDIO"/>
     <uses-permission android:required="true" android:name="android.permission.ACCESS_WIFI_STATE"/>
diff --git a/build.gradle b/build.gradle
index 97d43c4..b975809 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,7 +5,7 @@ buildscript {
         google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:3.5.1'
     }
 }
 
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 428a2ba..e997c21 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Sun Dec 24 10:02:44 PST 2017
+#Tue Apr 14 20:27:54 CEST 2020
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-all.zip