diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 0be2f1f..679b1a3 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -4,8 +4,11 @@
     package="com.example.cosmosclient">
     <!-- ここからバーコードリーダーのアクセス許可 -->
     <uses-permission android:name="android.permission.CAMERA" />
+    <uses-permission android:name="android.permission.INTERNET">
+    </uses-permission>
 
     <application
+        android:networkSecurityConfig="@xml/network_security_config"
         android:allowBackup="true"
         android:hardwareAccelerated="true"
         android:icon="@mipmap/ic_launcher"
@@ -27,16 +30,22 @@
         <activity
             android:name=".views.QRcodeReadingActivity"
             android:screenOrientation="portrait"
-            tools:replace="screenOrientation" />
-        <activity android:name=".views.SigninActivity">
+            tools:replace="screenOrientation">
+        </activity>
+        <activity android:name=".views.SigninActivity"
+            android:theme="@style/AppTheme.NoActionBar">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
-        <activity android:name=".views.SignupActivity" />
-        <activity android:name=".MainActivity" />
+        <activity android:name=".views.SignupActivity"
+            android:theme="@style/AppTheme.NoActionBar"/>
+        <activity
+            android:name=".views.ForgotPasswordActivity"
+            android:theme="@style/AppTheme.NoActionBar"></activity>
+        <activity android:name=".MainActivity"></activity>
         <activity
             android:name=".views.RequestListActivity"
             android:label="@string/title_activity_request_list"