diff --git a/android/app/build.gradle b/android/app/build.gradle
index 29d844482..5a8f1d831 100644
--- a/android/app/build.gradle
+++ b/android/app/build.gradle
@@ -59,8 +59,7 @@ dependencies {
     annotationProcessor 'androidx.annotation:annotation:1.1.0'
     annotationProcessor 'com.github.bumptech.glide:compiler:4.11.0'
     implementation 'com.google.guava:guava:28.2-android'
-    implementation 'com.karumi:dexter:6.0.0'
-    testImplementation 'junit:junit:4.12'
+    testImplementation 'junit:junit:4.13'
     androidTestImplementation 'androidx.test:runner:1.2.0'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
 }
diff --git a/android/build.gradle b/android/build.gradle
index 6de372893..11e3d0901 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -5,7 +5,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.5.3'
+        classpath 'com.android.tools.build:gradle:3.6.3'
     }
 }
 
diff --git a/android/gradle/wrapper/gradle-wrapper.properties b/android/gradle/wrapper/gradle-wrapper.properties
index 466aad805..29e1d3148 100644
--- a/android/gradle/wrapper/gradle-wrapper.properties
+++ b/android/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Mon Aug 26 22:57:25 KST 2019
+#Tue Apr 21 13:20:37 KST 2020
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.4-all.zip
diff --git a/pubspec.lock b/pubspec.lock
index 5284b4654..aab9e4719 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -1,13 +1,6 @@
 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
-  after_init:
-    dependency: "direct main"
-    description:
-      name: after_init
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "0.1.2"
   archive:
     dependency: transitive
     description:
@@ -184,20 +177,6 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.16.1"
-  io:
-    dependency: transitive
-    description:
-      name: io
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "0.3.4"
-  logger:
-    dependency: "direct main"
-    description:
-      name: logger
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "0.8.3"
   logging:
     dependency: transitive
     description:
@@ -448,13 +427,6 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.2.15"
-  transparent_image:
-    dependency: "direct main"
-    description:
-      name: transparent_image
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.0.0"
   tuple:
     dependency: "direct main"
     description:
diff --git a/pubspec.yaml b/pubspec.yaml
index ac5870d12..a97bb3759 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -36,7 +36,6 @@ version: 1.0.0+1
 dependencies:
   flutter:
     sdk: flutter
-  after_init:
   charts_flutter:
   collection:
   draggable_scrollbar:
@@ -58,7 +57,6 @@ dependencies:
   geocoder:
   google_maps_flutter:
   intl:
-  logger:
   outline_material_icons:
   path:
   pdf:
@@ -72,7 +70,6 @@ dependencies:
   screen:
   shared_preferences:
   sqflite:
-  transparent_image:
   tuple:
   uuid: