diff --git a/.gitignore b/.gitignore
index c6cbe56..ea53c89 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 *.iml
+*.apk
 .gradle
 /local.properties
 /.idea/workspace.xml
diff --git a/app/app-release.apk b/app/app-release.apk
deleted file mode 100644
index 7aefe83..0000000
Binary files a/app/app-release.apk and /dev/null differ
diff --git a/app/build.gradle b/app/build.gradle
index 8201ac1..9049cf2 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -21,14 +21,14 @@ android {
 }
 
 dependencies {
-    compile fileTree(dir: 'libs', include: ['*.jar'])
-    compile 'com.android.support:appcompat-v7:27.0.2'
-    compile 'com.android.support:design:27.0.2'
-    compile 'com.android.support:support-v4:27.0.2'
-    compile 'com.android.support:percent:27.0.2'
-    compile 'com.android.support:recyclerview-v7:27.0.2'
-    compile 'com.google.android.gms:play-services-ads:11.8.0'
-    compile 'net.danlew:android.joda:2.9.7'
-    compile 'com.android.support.constraint:constraint-layout:1.0.2'
-    testCompile 'junit:junit:4.12'
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation 'com.android.support:appcompat-v7:27.0.2'
+    implementation 'com.android.support:design:27.0.2'
+    implementation 'com.android.support:support-v4:27.0.2'
+    implementation 'com.android.support:percent:27.0.2'
+    implementation 'com.android.support:recyclerview-v7:27.0.2'
+    implementation 'com.google.android.gms:play-services-ads:11.8.0'
+    implementation 'net.danlew:android.joda:2.9.7'
+    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
+    testImplementation 'junit:junit:4.12'
 }