diff --git a/ENGLISH.md b/ENGLISH.md
index d62184f..20f1401 100644
--- a/ENGLISH.md
+++ b/ENGLISH.md
@@ -9,7 +9,7 @@
 
 <div align = "center">  
 <a href="https://github.com/devxb/gitanimals">
-    <img src="https://render.gitanimals.org/lines/devxb?pet-id=8" width="1000" height="150"/>
+    <img src="https://render.gitanimals.org/lines/devxb?pet-id=23" width="1000" height="100"/>
 </a>
 
 ⭐️ Please press the star! It greatly helps development! ⭐️<br>
diff --git a/README.md b/README.md
index 74fcb0b..a2b99cd 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@
 
 <div align = "center">  
 <a href="https://github.com/devxb/gitanimals">
-    <img src="https://render.gitanimals.org/lines/devxb?pet-id=8" width="1000" height="150"/>
+    <img src="https://render.gitanimals.org/lines/devxb?pet-id=23" width="1000" height="100"/>
 </a>
 
 ⭐스타를 눌러주세요 개발에 큰 도움이 됩니다!⭐️<br>
diff --git a/src/main/kotlin/org/gitanimals/render/app/Exception.kt b/src/main/kotlin/org/gitanimals/render/app/Exception.kt
new file mode 100644
index 0000000..d0eae82
--- /dev/null
+++ b/src/main/kotlin/org/gitanimals/render/app/Exception.kt
@@ -0,0 +1,6 @@
+package org.gitanimals.render.app
+
+
+class AuthorizationException(message: String) : IllegalArgumentException(message)
+
+val AUTHORIZATION_EXCEPTION = AuthorizationException("Authorization fail")
diff --git a/src/main/kotlin/org/gitanimals/render/controller/PersonaController.kt b/src/main/kotlin/org/gitanimals/render/controller/PersonaController.kt
index 41a9c30..5a24e7b 100644
--- a/src/main/kotlin/org/gitanimals/render/controller/PersonaController.kt
+++ b/src/main/kotlin/org/gitanimals/render/controller/PersonaController.kt
@@ -1,5 +1,6 @@
 package org.gitanimals.render.controller
 
+import org.gitanimals.render.app.AuthorizationException
 import org.gitanimals.render.app.UserFacade
 import org.gitanimals.render.controller.request.AddPersonaRequest
 import org.gitanimals.render.controller.response.ErrorResponse
@@ -79,4 +80,9 @@ class PersonaController(
     @ResponseStatus(HttpStatus.BAD_REQUEST)
     fun handleIllegalArgumentException(exception: IllegalArgumentException): ErrorResponse =
         ErrorResponse.from(exception)
+
+    @ExceptionHandler(AuthorizationException::class)
+    @ResponseStatus(HttpStatus.UNAUTHORIZED)
+    fun handleAuthorizationException(exception: AuthorizationException): ErrorResponse =
+        ErrorResponse.from(exception)
 }
diff --git a/src/main/kotlin/org/gitanimals/render/infra/RestIdentityApi.kt b/src/main/kotlin/org/gitanimals/render/infra/RestIdentityApi.kt
index 9b394c5..6ee94a9 100644
--- a/src/main/kotlin/org/gitanimals/render/infra/RestIdentityApi.kt
+++ b/src/main/kotlin/org/gitanimals/render/infra/RestIdentityApi.kt
@@ -1,5 +1,6 @@
 package org.gitanimals.render.infra
 
+import org.gitanimals.render.app.AUTHORIZATION_EXCEPTION
 import org.gitanimals.render.app.IdentityApi
 import org.springframework.http.HttpHeaders
 import org.springframework.stereotype.Component
@@ -18,7 +19,7 @@ class RestIdentityApi : IdentityApi {
                 runCatching {
                     response.bodyTo(IdentityApi.UserResponse::class.java)
                 }.getOrElse {
-                    throw IllegalArgumentException("Unauthorized user")
+                    throw AUTHORIZATION_EXCEPTION
                 }
             }
     }