diff --git a/src/main/kotlin/dev/usbharu/hideout/core/service/instance/InstanceService.kt b/src/main/kotlin/dev/usbharu/hideout/core/service/instance/InstanceService.kt
index c41a6d8c..a9a84f3d 100644
--- a/src/main/kotlin/dev/usbharu/hideout/core/service/instance/InstanceService.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/core/service/instance/InstanceService.kt
@@ -50,36 +50,17 @@ class InstanceServiceImpl(
         }
 
         logger.info("Instance not found. try fetch instance info. url: {}", resolveInstanceUrl)
-
+        @Suppress("TooGenericExceptionCaught")
         try {
-
-
             val nodeinfoJson = resourceResolveService.resolve("$resolveInstanceUrl/.well-known/nodeinfo").bodyAsText()
             val nodeinfo = objectMapper.readValue(nodeinfoJson, Nodeinfo::class.java)
             val nodeinfoPathMap = nodeinfo.links.associate { it.rel to it.href }
 
             for ((key, value) in nodeinfoPathMap) {
                 when (key) {
-                    "http://nodeinfo.diaspora.software/ns/schema/2.0" -> {
-                        val nodeinfo20 = objectMapper.readValue(
-                            resourceResolveService.resolve(value!!).bodyAsText(),
-                            Nodeinfo2_0::class.java
-                        )
-
-                        val instanceCreateDto = InstanceCreateDto(
-                            name = nodeinfo20.metadata?.nodeName,
-                            description = nodeinfo20.metadata?.nodeDescription,
-                            url = resolveInstanceUrl,
-                            iconUrl = "$resolveInstanceUrl/favicon.ico",
-                            sharedInbox = sharedInbox,
-                            software = nodeinfo20.software?.name,
-                            version = nodeinfo20.software?.version
-                        )
-                        return createNewInstance(instanceCreateDto)
-                    }
-
-                    // TODO: 多分2.0と2.1で互換性有るのでそのまま使うけどなおす
-                    "http://nodeinfo.diaspora.software/ns/schema/2.1" -> {
+                    "http://nodeinfo.diaspora.software/ns/schema/2.0",
+                    "http://nodeinfo.diaspora.software/ns/schema/2.1",
+                    -> {
                         val nodeinfo20 = objectMapper.readValue(
                             resourceResolveService.resolve(value!!).bodyAsText(),
                             Nodeinfo2_0::class.java
@@ -102,8 +83,6 @@ class InstanceServiceImpl(
                     }
                 }
             }
-
-
         } catch (e: Exception) {
             logger.warn("FAILED Fetch Instance", e)
         }
diff --git a/src/main/kotlin/dev/usbharu/hideout/mastodon/config/MastodonApiSecurityConfig.kt b/src/main/kotlin/dev/usbharu/hideout/mastodon/config/MastodonApiSecurityConfig.kt
index ffb8d734..39ec70fb 100644
--- a/src/main/kotlin/dev/usbharu/hideout/mastodon/config/MastodonApiSecurityConfig.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/mastodon/config/MastodonApiSecurityConfig.kt
@@ -31,6 +31,7 @@ import org.springframework.security.web.SecurityFilterChain
 class MastodonApiSecurityConfig {
     @Bean
     @Order(4)
+    @Suppress("LongMethod")
     fun mastodonApiSecurityFilterChain(
         http: HttpSecurity,
         rf: RoleHierarchyAuthorizationManagerFactory,