diff --git a/src/main/kotlin/org/koitharu/kotatsu/parsers/network/UserAgents.kt b/src/main/kotlin/org/koitharu/kotatsu/parsers/network/UserAgents.kt
index fdd9eb8f..4e3bbcb6 100644
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/network/UserAgents.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/network/UserAgents.kt
@@ -3,12 +3,12 @@ package org.koitharu.kotatsu.parsers.network
 object UserAgents {
 
 	const val CHROME_MOBILE =
-		"Mozilla/5.0 (Linux; Android 12) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.196 Mobile Safari/537.36"
+		"Mozilla/5.0 (Linux; Android 13) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.196 Mobile Safari/537.36"
 
 	const val CHROME_DESKTOP =
 		"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36"
 
 	const val FIREFOX_DESKTOP = "Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/116.0"
 
-	const val KOTATSU = "Kotatsu/5.3 (Android 12;;; en)"
+	const val KOTATSU = "Kotatsu/5.3 (Android 13;;; en)"
 }
diff --git a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/ru/RemangaParser.kt b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/ru/RemangaParser.kt
index d3f82799..dee37f30 100644
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/ru/RemangaParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/ru/RemangaParser.kt
@@ -29,9 +29,12 @@ internal class RemangaParser(
 	context: MangaLoaderContext,
 ) : PagedMangaParser(context, MangaSource.REMANGA, PAGE_SIZE), MangaParserAuthProvider {
 
-	private val baseHeaders = Headers.Builder()
-		.add("User-Agent", UserAgents.CHROME_MOBILE)
-		.build()
+	private val userAgentKey = ConfigKey.UserAgent(UserAgents.CHROME_MOBILE)
+
+	private val baseHeaders: Headers
+		get() = Headers.Builder()
+			.add("User-Agent", config[userAgentKey])
+			.build()
 
 	override val headers
 		get() = getApiHeaders()
@@ -224,6 +227,11 @@ internal class RemangaParser(
 		return jo.getJSONObject("content").getString("username")
 	}
 
+	override fun onCreateConfig(keys: MutableCollection<ConfigKey<*>>) {
+		super.onCreateConfig(keys)
+		keys.add(userAgentKey)
+	}
+
 	private fun getApiHeaders(): Headers {
 		val userCookie = context.cookieJar.getCookies(domain).find {
 			it.name == "user"