diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 7ec1c97..0fbac27 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -45,6 +45,7 @@
     implementation(libs.converter.jackson)
     implementation(libs.navigation.runtime.android)
     implementation (libs.material.v1100)
+    implementation(libs.converter.scalars)
     testImplementation(libs.junit)
     androidTestImplementation(libs.ext.junit)
     androidTestImplementation(libs.espresso.core)
diff --git a/app/src/main/java/com/example/tampopo_client/viewmodels/FriendViewModel.java b/app/src/main/java/com/example/tampopo_client/viewmodels/FriendViewModel.java
index 9c4005c..91b8021 100644
--- a/app/src/main/java/com/example/tampopo_client/viewmodels/FriendViewModel.java
+++ b/app/src/main/java/com/example/tampopo_client/viewmodels/FriendViewModel.java
@@ -14,6 +14,7 @@
 import retrofit2.Response;
 import retrofit2.Retrofit;
 import retrofit2.converter.jackson.JacksonConverterFactory;
+import retrofit2.converter.scalars.ScalarsConverterFactory;
 import retrofit2.http.Field;
 
 public class FriendViewModel extends ViewModel {
@@ -27,6 +28,7 @@
     public FriendViewModel(){
         this.retrofit = new Retrofit.Builder()
                 .baseUrl("http://nitta-lab-www.is.konan-u.ac.jp/tampopo/")
+                .addConverterFactory(ScalarsConverterFactory.create())
                 .addConverterFactory(JacksonConverterFactory.create())
                 .build();
         this.usersResource = retrofit.create(UserResource.class);
diff --git a/app/src/main/java/com/example/tampopo_client/viewmodels/UserViewModel.java b/app/src/main/java/com/example/tampopo_client/viewmodels/UserViewModel.java
index f16fdf6..4fe101d 100644
--- a/app/src/main/java/com/example/tampopo_client/viewmodels/UserViewModel.java
+++ b/app/src/main/java/com/example/tampopo_client/viewmodels/UserViewModel.java
@@ -12,6 +12,7 @@
 import retrofit2.Response;
 import retrofit2.Retrofit;
 import retrofit2.converter.jackson.JacksonConverterFactory;
+import retrofit2.converter.scalars.ScalarsConverterFactory;
 
 /*userだけなのでサーバーから情報を取ってくることは名前の変更
 viewModelはviewからrequestをもらってmodelに流す
@@ -49,6 +50,7 @@
     public UserViewModel(){
         this.retrofit = new Retrofit.Builder()
                 .baseUrl("http://nitta-lab-www.is.konan-u.ac.jp/tampopo/")
+                .addConverterFactory(ScalarsConverterFactory.create())
                 .addConverterFactory(JacksonConverterFactory.create())
                 .build();
         this.userResource = retrofit.create(UserResource.class);
diff --git a/app/src/main/java/com/example/tampopo_client/views/RegisterActivity.java b/app/src/main/java/com/example/tampopo_client/views/RegisterActivity.java
index 625e438..759f6b6 100644
--- a/app/src/main/java/com/example/tampopo_client/views/RegisterActivity.java
+++ b/app/src/main/java/com/example/tampopo_client/views/RegisterActivity.java
@@ -62,16 +62,15 @@
 
 
                 //アカウントの確認、問題なければ通信
-                if (userViewModel.getUser().getValue() != null) {
+                //if (userViewModel.getUser().getValue() != null) {
                     userViewModel.login(userId, password);
                     tampopo.setUserId(userId);
                     tampopo.setPassword(password);
                     Intent intent = new Intent(RegisterActivity.this, MainActivity.class);
                     startActivity(intent);
-                } else {
-                    Toast.makeText(RegisterActivity.this, "アカウント作成に失敗しました", Toast.LENGTH_SHORT).show();
-                }
-
+//                } else {
+//                    Toast.makeText(RegisterActivity.this, "アカウント作成に失敗しました", Toast.LENGTH_SHORT).show();
+//                }
             }
         });
 
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index e181c51..561933d 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -16,6 +16,7 @@
 navigationRuntimeAndroid = "2.9.0"
 navigation = "2.6.0"
 viewpager2 = "1.0.0"
+converterScalars = "3.0.0"
 
 [libraries]
 junit = { group = "junit", name = "junit", version.ref = "junit" }
@@ -35,6 +36,7 @@
 navigation-fragment = { module = "androidx.navigation:navigation-fragment", version.ref = "navigation" }
 navigation-ui = { module = "androidx.navigation:navigation-ui", version.ref = "navigation" }
 viewpager2 = { group = "androidx.viewpager2", name = "viewpager2", version.ref = "viewpager2" }
+converter-scalars = { group = "com.squareup.retrofit2", name = "converter-scalars", version.ref = "converterScalars" }
 
 
 [plugins]