diff --git a/app/src/main/java/one/nem/lacerta/MainActivity.java b/app/src/main/java/one/nem/lacerta/MainActivity.java
index e3f8087b..404debd0 100644
--- a/app/src/main/java/one/nem/lacerta/MainActivity.java
+++ b/app/src/main/java/one/nem/lacerta/MainActivity.java
@@ -10,7 +10,8 @@ import android.os.Bundle;
 import android.widget.Toast;
 
 import com.google.android.material.bottomnavigation.BottomNavigationView;
-import com.google.android.material.color.DynamicColors;
+
+
 
 
 import dagger.hilt.android.AndroidEntryPoint;
@@ -22,7 +23,6 @@ public class MainActivity extends AppCompatActivity {
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        // DynamicColorを有効化
         setContentView(R.layout.activity_main);
 
         // Debug
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 4c4fa3a1..0d575ad0 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -4,6 +4,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
+    android:theme="@style/Theme.Lacerta"
     tools:context=".MainActivity">
 
     <androidx.fragment.app.FragmentContainerView
@@ -23,6 +24,7 @@
         android:id="@+id/bottom_nav"
         android:layout_width="0dp"
         android:layout_height="wrap_content"
+        android:theme="@style/Theme.Lacerta"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"