diff --git a/src/main/kotlin/dev/usbharu/hideout/controller/InboxControllerImpl.kt b/src/main/kotlin/dev/usbharu/hideout/controller/InboxControllerImpl.kt
index 235c821f..e06ec648 100644
--- a/src/main/kotlin/dev/usbharu/hideout/controller/InboxControllerImpl.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/controller/InboxControllerImpl.kt
@@ -9,6 +9,7 @@ import org.springframework.web.bind.annotation.RestController
 
 @RestController
 class InboxControllerImpl(private val apService: APService) : InboxController {
+    @Suppress("TooGenericExceptionCaught")
     override suspend fun inbox(@RequestBody string: String): ResponseEntity<Unit> {
         val parseActivity = try {
             apService.parseActivity(string)
diff --git a/src/main/kotlin/dev/usbharu/hideout/repository/UserQueryMapper.kt b/src/main/kotlin/dev/usbharu/hideout/repository/UserQueryMapper.kt
index 62828e72..d4969965 100644
--- a/src/main/kotlin/dev/usbharu/hideout/repository/UserQueryMapper.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/repository/UserQueryMapper.kt
@@ -6,7 +6,5 @@ import org.springframework.stereotype.Component
 
 @Component
 class UserQueryMapper(private val userResultRowMapper: ResultRowMapper<User>) : QueryMapper<User> {
-    override fun map(query: Query): List<User> {
-        return query.map(userResultRowMapper::map)
-    }
+    override fun map(query: Query): List<User> = query.map(userResultRowMapper::map)
 }
diff --git a/src/main/kotlin/dev/usbharu/hideout/repository/UserRepositoryImpl.kt b/src/main/kotlin/dev/usbharu/hideout/repository/UserRepositoryImpl.kt
index 0a1a9958..1a37c5d2 100644
--- a/src/main/kotlin/dev/usbharu/hideout/repository/UserRepositoryImpl.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/repository/UserRepositoryImpl.kt
@@ -55,9 +55,8 @@ class UserRepositoryImpl(
         return user
     }
 
-    override suspend fun findById(id: Long): User? {
-        return Users.select { Users.id eq id }.singleOrNull()?.let(userResultRowMapper::map)
-    }
+    override suspend fun findById(id: Long): User? =
+        Users.select { Users.id eq id }.singleOrNull()?.let(userResultRowMapper::map)
 
     override suspend fun deleteFollowRequest(id: Long, follower: Long) {
         FollowRequests.deleteWhere { userId.eq(id) and followerId.eq(follower) }
diff --git a/src/main/kotlin/dev/usbharu/hideout/service/signature/HttpSignatureUserDetailsService.kt b/src/main/kotlin/dev/usbharu/hideout/service/signature/HttpSignatureUserDetailsService.kt
index 0f58350c..ba12cca0 100644
--- a/src/main/kotlin/dev/usbharu/hideout/service/signature/HttpSignatureUserDetailsService.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/service/signature/HttpSignatureUserDetailsService.kt
@@ -40,6 +40,7 @@ class HttpSignatureUserDetailsService(
             }
         }
 
+        @Suppress("TooGenericExceptionCaught")
         val verify = try {
             httpSignatureVerifier.verify(
                 token.credentials as HttpRequest,