diff --git a/CHANGELOG.md b/CHANGELOG.md
index 780fc34..6fcf9f3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## 0.8.0
 
+* Dependencies update
+* `Ratings`:
+    * Add autoclearing of ratings without target posts each half hours
+
 ## 0.7.0
 
 * Dependencies update
diff --git a/ratings/build.gradle b/ratings/build.gradle
index 3793d30..1c0d789 100644
--- a/ratings/build.gradle
+++ b/ratings/build.gradle
@@ -11,6 +11,7 @@ kotlin {
             dependencies {
                 api project(":plaguposter.common")
                 api project(":plaguposter.posts")
+                api libs.krontab
             }
         }
     }
diff --git a/ratings/src/commonMain/kotlin/models/Config.kt b/ratings/src/commonMain/kotlin/models/Config.kt
new file mode 100644
index 0000000..6f8b6c7
--- /dev/null
+++ b/ratings/src/commonMain/kotlin/models/Config.kt
@@ -0,0 +1,18 @@
+package dev.inmo.plaguposter.ratings.models
+
+import dev.inmo.krontab.EveryHourScheduler
+import dev.inmo.krontab.KrontabTemplate
+import dev.inmo.krontab.buildSchedule
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.Transient
+
+@Serializable
+internal data class RatingsConfig(
+    @SerialName("manualRecheckKrontab")
+    val manualRecheckKrontabTemplate: KrontabTemplate = "0 /30 *"
+) {
+    @Transient
+    val manualRecheckKrontab
+        get() = buildSchedule(manualRecheckKrontabTemplate)
+}
diff --git a/ratings/src/jvmMain/kotlin/Plugin.kt b/ratings/src/jvmMain/kotlin/Plugin.kt
index 44ab330..deb5960 100644
--- a/ratings/src/jvmMain/kotlin/Plugin.kt
+++ b/ratings/src/jvmMain/kotlin/Plugin.kt
@@ -1,20 +1,29 @@
 package dev.inmo.plaguposter.ratings
 
+import dev.inmo.krontab.utils.asTzFlowWithDelays
+import dev.inmo.kslog.common.TagLogger
+import dev.inmo.kslog.common.i
 import dev.inmo.micro_utils.coroutines.subscribeSafelyWithoutExceptions
 import dev.inmo.micro_utils.koin.singleWithBinds
 import dev.inmo.micro_utils.repos.unset
 import dev.inmo.plagubot.Plugin
+import dev.inmo.plagubot.config
 import dev.inmo.plagubot.database
+import dev.inmo.plagubot.registerConfig
 import dev.inmo.plaguposter.common.useCache
 import dev.inmo.plaguposter.posts.repo.PostsRepo
+import dev.inmo.plaguposter.ratings.Plugin.setupBotPlugin
 import dev.inmo.plaguposter.ratings.exposed.ExposedRatingsRepo
+import dev.inmo.plaguposter.ratings.models.RatingsConfig
 import dev.inmo.plaguposter.ratings.repo.*
 import dev.inmo.tgbotapi.extensions.behaviour_builder.BehaviourContext
+import kotlinx.coroutines.CoroutineScope
 import kotlinx.serialization.json.*
 import org.koin.core.Koin
 import org.koin.core.module.Module
 
 object Plugin : Plugin {
+    private val Log = TagLogger("RatingsPlugin")
     override fun Module.setupDI(config: JsonObject) {
         single { ExposedRatingsRepo(database) }
         singleWithBinds<RatingsRepo> {
@@ -26,12 +35,24 @@ object Plugin : Plugin {
                 base
             }
         }
+
+        registerConfig(RatingsConfig.serializer(), "ratings") { RatingsConfig() }
     }
 
-    override suspend fun BehaviourContext.setupBotPlugin(koin: Koin) {
+    override suspend fun startPlugin(koin: Koin) {
+        super.startPlugin(koin)
+        val config = koin.config<RatingsConfig>()
+        val scope = koin.get<CoroutineScope>()
         val ratingsRepo = koin.get<RatingsRepo>()
-        koin.get<PostsRepo>().deletedObjectsIdsFlow.subscribeSafelyWithoutExceptions(this) {
+        val postsRepo = koin.get<PostsRepo>()
+        postsRepo.deletedObjectsIdsFlow.subscribeSafelyWithoutExceptions(scope) {
             ratingsRepo.unset(it)
         }
+        config.manualRecheckKrontab.asTzFlowWithDelays().subscribeSafelyWithoutExceptions(scope) {
+            Log.i { "Start clearing ratings without registered posts" }
+            val postsIdsToRemove = ratingsRepo.getAll().keys - postsRepo.getAll().keys
+            Log.i { "Posts to remove: $postsIdsToRemove" }
+            ratingsRepo.unset(postsIdsToRemove.toList())
+        }
     }
 }