diff --git a/src/main/kotlin/dev/usbharu/hideout/application/config/SecurityConfig.kt b/src/main/kotlin/dev/usbharu/hideout/application/config/SecurityConfig.kt
index a5762bb1..3dd57dd5 100644
--- a/src/main/kotlin/dev/usbharu/hideout/application/config/SecurityConfig.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/application/config/SecurityConfig.kt
@@ -182,7 +182,7 @@ class SecurityConfig {
             ).anonymous()
             it.requestMatchers(builder.pattern("/change-password")).authenticated()
             it.requestMatchers(builder.pattern("/api/v1/accounts/verify_credentials"))
-                .hasAnyAuthority("SCOPE_read", "SCOPE_read:accounts")
+                .hasAnyAuthority("SCOPE_read:accounts")
             it.anyRequest().permitAll()
         }
         http.oauth2ResourceServer {
diff --git a/src/main/kotlin/dev/usbharu/hideout/mastodon/service/app/AppApiService.kt b/src/main/kotlin/dev/usbharu/hideout/mastodon/service/app/AppApiService.kt
index 6d7d463e..58423b68 100644
--- a/src/main/kotlin/dev/usbharu/hideout/mastodon/service/app/AppApiService.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/mastodon/service/app/AppApiService.kt
@@ -28,6 +28,7 @@ class AppApiServiceImpl(
     private val passwordEncoder: PasswordEncoder,
     private val transaction: Transaction
 ) : AppApiService {
+
     override suspend fun createApp(appsRequest: AppsRequest): Application {
         return transaction.transaction {
             val id = UUID.randomUUID().toString()
@@ -65,5 +66,84 @@ class AppApiServiceImpl(
         }
     }
 
-    private fun parseScope(string: String): Set<String> = string.split(" ").toSet()
+    private fun parseScope(string: String): Set<String> {
+        return string.split(" ")
+            .flatMap {
+                when (it) {
+                    "read" -> READ_SCOPES
+                    "write" -> WRITE_SCOPES
+                    "follow" -> FOLLOW_SCOPES
+                    "admin" -> ADMIN_SCOPES
+                    "admin:write" -> ADMIN_WRITE_SCOPES
+                    "admin:read" -> ADMIN_READ_SCOPES
+                    else -> listOfNotNull(it.takeIf { ALL_SCOPES.contains(it) })
+                }
+            }
+            .toSet()
+    }
+
+    companion object {
+        private val READ_SCOPES = listOf(
+            "read:accounts",
+            "read:blocks",
+            "read:bookmarks",
+            "read:favourites",
+            "read:filters",
+            "read:follows",
+            "read:lists",
+            "read:mutes",
+            "read:notifications",
+            "read:search",
+            "read:statuses"
+        )
+
+        private val WRITE_SCOPES = listOf(
+            "write:accounts",
+            "write:blocks",
+            "write:bookmarks",
+            "write:conversations",
+            "write:favourites",
+            "write:filters",
+            "write:follows",
+            "write:lists",
+            "write:media",
+            "write:mutes",
+            "write:notifications",
+            "write:reports",
+            "write:statuses"
+        )
+
+        private val FOLLOW_SCOPES = listOf(
+            "read:blocks",
+            "write:blocks",
+            "read:follows",
+            "write:follows",
+            "read:mutes",
+            "write:mutes"
+        )
+
+        private val ADMIN_READ_SCOPES = listOf(
+            "admin:read:accounts",
+            "admin:read:reports",
+            "admin:read:domain_allows",
+            "admin:read:domain_blocks",
+            "admin:read:ip_blocks",
+            "admin:read:email_domain_blocks",
+            "admin:read:canonical_email_blocks"
+        )
+
+        private val ADMIN_WRITE_SCOPES = listOf(
+            "admin:write:accounts",
+            "admin:write:reports",
+            "admin:write:domain_allows",
+            "admin:write:domain_blocks",
+            "admin:write:ip_blocks",
+            "admin:write:email_domain_blocks",
+            "admin:write:canonical_email_blocks"
+        )
+
+        private val ADMIN_SCOPES = ADMIN_READ_SCOPES + ADMIN_WRITE_SCOPES
+
+        private val ALL_SCOPES = READ_SCOPES + WRITE_SCOPES + FOLLOW_SCOPES + ADMIN_SCOPES
+    }
 }