diff --git a/.idea/kotlinc.xml b/.idea/kotlinc.xml
index 9a55c2de1..fdf8d994a 100644
--- a/.idea/kotlinc.xml
+++ b/.idea/kotlinc.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="KotlinJpsPluginSettings">
-    <option name="version" value="1.8.22" />
+    <option name="version" value="1.9.0" />
   </component>
 </project>
\ No newline at end of file
diff --git a/src/main/kotlin/org/koitharu/kotatsu/parsers/model/Favicons.kt b/src/main/kotlin/org/koitharu/kotatsu/parsers/model/Favicons.kt
index 6c37fe4f7..4fe744214 100644
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/model/Favicons.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/model/Favicons.kt
@@ -18,6 +18,11 @@ class Favicons internal constructor(
 
 	override fun iterator(): Iterator<Favicon> = icons.iterator()
 
+	operator fun minus(victim: Favicon): Favicons = Favicons(
+		favicons = icons.filterNot { it == victim },
+		referer = referer,
+	)
+
 	/**
 	 * Finds a favicon whose size in pixels is greater than or equal to the specified size.
 	 * If such icon is not available returns the largest icon
diff --git a/src/main/kotlin/org/koitharu/kotatsu/parsers/network/interceptors/RateLimitInterceptor.kt b/src/main/kotlin/org/koitharu/kotatsu/parsers/network/interceptors/RateLimitInterceptor.kt
deleted file mode 100644
index 7165bad39..000000000
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/network/interceptors/RateLimitInterceptor.kt
+++ /dev/null
@@ -1,79 +0,0 @@
-package org.koitharu.kotatsu.parsers.network.interceptors
-
-import okhttp3.Interceptor
-import okhttp3.Response
-import okhttp3.internal.notifyAll
-import okio.IOException
-import java.util.concurrent.Semaphore
-import java.util.concurrent.TimeUnit
-
-// TODO rewrite this
-class RateLimitInterceptor : Interceptor {
-
-	private val requestQueue = ArrayDeque<Long>(10)
-	private val rateLimitMillis = TimeUnit.SECONDS.toMillis(60L)
-	private val fairLock = Semaphore(1, true)
-
-	override fun intercept(chain: Interceptor.Chain): Response {
-		val call = chain.call()
-		val request = chain.request()
-
-		try {
-			fairLock.acquire()
-		} catch (e: InterruptedException) {
-			throw IOException(e)
-		}
-
-		val requestQueue = this.requestQueue
-		val timestamp: Long
-
-		try {
-			synchronized(requestQueue) {
-				while (requestQueue.size >= 10) {
-					val periodStart = System.currentTimeMillis() - rateLimitMillis
-					var hasRemovedExpired = false
-					while (requestQueue.isEmpty().not() && requestQueue.first() <= periodStart) {
-						requestQueue.removeFirst()
-						hasRemovedExpired = true
-					}
-					if (call.isCanceled()) {
-						throw IOException("Canceled")
-					} else if (hasRemovedExpired) {
-						break
-					} else {
-						try {
-							requestQueue.wait(requestQueue.first() - periodStart)
-						} catch (_: InterruptedException) {
-							continue
-						}
-					}
-				}
-
-				timestamp = System.currentTimeMillis()
-				requestQueue.addLast(timestamp)
-			}
-		} finally {
-			fairLock.release()
-		}
-
-		val response = chain.proceed(request)
-		if (response.networkResponse == null) {
-			synchronized(requestQueue) {
-				if (requestQueue.isEmpty() || timestamp < requestQueue.first()) return@synchronized
-				val iterator = requestQueue.iterator()
-				while (iterator.hasNext()) {
-					if (iterator.next() == timestamp) {
-						iterator.remove()
-						break
-					}
-				}
-				requestQueue.notifyAll()
-			}
-		}
-
-		return response
-	}
-
-	@Suppress("PLATFORM_CLASS_MAPPED_TO_KOTLIN", "NOTHING_TO_INLINE")
-	private inline fun Any.wait(timeout: Long) = (this as Object).wait(timeout)
-}