diff --git a/src/main/kotlin/dev/usbharu/hideout/activitypub/service/objects/user/APUserService.kt b/src/main/kotlin/dev/usbharu/hideout/activitypub/service/objects/user/APUserService.kt
index 9e8cb4b8..422b4874 100644
--- a/src/main/kotlin/dev/usbharu/hideout/activitypub/service/objects/user/APUserService.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/activitypub/service/objects/user/APUserService.kt
@@ -77,6 +77,7 @@ class APUserServiceImpl(
     override suspend fun fetchPerson(url: String, targetActor: String?): Person =
         fetchPersonWithEntity(url, targetActor).first
 
+    @Suppress("LongMethod")
     override suspend fun fetchPersonWithEntity(url: String, targetActor: String?): Pair<Person, User> {
         return try {
             val userEntity = userQueryService.findByUrl(url)
diff --git a/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/springframework/httpsignature/HttpSignatureFilter.kt b/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/springframework/httpsignature/HttpSignatureFilter.kt
index 6a68e267..e814e568 100644
--- a/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/springframework/httpsignature/HttpSignatureFilter.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/springframework/httpsignature/HttpSignatureFilter.kt
@@ -37,7 +37,7 @@ class HttpSignatureFilter(
             transaction.transaction {
                 try {
                     userQueryService.findByKeyId(signature.keyId)
-                } catch (e: FailedToGetResourcesException) {
+                } catch (_: FailedToGetResourcesException) {
                     apUserService.fetchPerson(signature.keyId)
                 }
             }
diff --git a/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/springframework/oauth2/ExposedOAuth2AuthorizationService.kt b/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/springframework/oauth2/ExposedOAuth2AuthorizationService.kt
index 458f805c..b18d5ca0 100644
--- a/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/springframework/oauth2/ExposedOAuth2AuthorizationService.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/springframework/oauth2/ExposedOAuth2AuthorizationService.kt
@@ -272,7 +272,9 @@ class ExposedOAuth2AuthorizationService(
                 oidcIdTokenValue,
                 oidcTokenIssuedAt,
                 oidcTokenExpiresAt,
-                oidcTokenMetadata.getValue(OAuth2Authorization.Token.CLAIMS_METADATA_NAME) as MutableMap<String, Any>?
+                @Suppress("CastToNullableType")
+                oidcTokenMetadata.getValue(OAuth2Authorization.Token.CLAIMS_METADATA_NAME)
+                        as MutableMap<String, Any>?
             )
 
             builder.token(oidcIdToken) { it.putAll(oidcTokenMetadata) }
diff --git a/src/main/kotlin/dev/usbharu/hideout/core/service/media/converter/movie/MovieMediaProcessService.kt b/src/main/kotlin/dev/usbharu/hideout/core/service/media/converter/movie/MovieMediaProcessService.kt
index 9b39e854..711cf29b 100644
--- a/src/main/kotlin/dev/usbharu/hideout/core/service/media/converter/movie/MovieMediaProcessService.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/core/service/media/converter/movie/MovieMediaProcessService.kt
@@ -34,6 +34,7 @@ class MovieMediaProcessService : MediaProcessService {
         TODO("Not yet implemented")
     }
 
+    @Suppress("LongMethod", "NestedBlockDepth", "CognitiveComplexMethod")
     override suspend fun process(
         mimeType: MimeType,
         fileName: String,