diff --git a/src/main/kotlin/org/koitharu/kotatsu/parsers/MangaParser.kt b/src/main/kotlin/org/koitharu/kotatsu/parsers/MangaParser.kt
index 82848fb23..7d8d5ce85 100644
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/MangaParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/MangaParser.kt
@@ -76,7 +76,7 @@ abstract class MangaParser @InternalParsersApi constructor(
 	abstract val configKeyDomain: ConfigKey.Domain
 
 	open val headers: Headers = Headers.Builder()
-		.add("User-Agent", UserAgents.CHROME_MOBILE)
+		.add("User-Agent", UserAgents.DEFAULT_BROWSER)
 		.build()
 
 	/**
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 4e3bbcb67..0ac3e52ef 100644
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/network/UserAgents.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/network/UserAgents.kt
@@ -2,13 +2,19 @@ package org.koitharu.kotatsu.parsers.network
 
 object UserAgents {
 
+	@Deprecated("Issues with CloudFlare", replaceWith = ReplaceWith("UserAgents.DEFAULT_BROWSER"))
 	const val CHROME_MOBILE =
 		"Mozilla/5.0 (Linux; Android 13) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.196 Mobile Safari/537.36"
 
+	const val FIREFOX_MOBILE = "Mozilla/5.0 (Android 14; Mobile; LG-M255; rv:123.0) Gecko/123.0 Firefox/123.0"
+
 	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 13;;; en)"
+	const val KOTATSU = "Kotatsu/6.8 (Android 13;;; en)"
+
+
+	const val DEFAULT_BROWSER = FIREFOX_MOBILE
 }
diff --git a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/fr/LegacyScansParser.kt b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/fr/LegacyScansParser.kt
index 73890a17d..92c0b3957 100644
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/fr/LegacyScansParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/fr/LegacyScansParser.kt
@@ -25,7 +25,7 @@ internal class LegacyScansParser(context: MangaLoaderContext) :
 	override val configKeyDomain = ConfigKey.Domain("legacy-scans.com")
 
 	override val headers: Headers = Headers.Builder()
-		.add("User-Agent", UserAgents.CHROME_MOBILE)
+		.add("User-Agent", UserAgents.DEFAULT_BROWSER)
 		.build()
 
 	override suspend fun getListPage(page: Int, filter: MangaListFilter?): List<Manga> {
diff --git a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/fr/LireScan.kt b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/fr/LireScan.kt
index 593d4470f..efd93e622 100644
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/fr/LireScan.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/fr/LireScan.kt
@@ -21,7 +21,7 @@ internal class LireScan(context: MangaLoaderContext) : PagedMangaParser(context,
 	override val isMultipleTagsSupported = false
 
 	override val headers: Headers = Headers.Builder()
-		.add("User-Agent", UserAgents.CHROME_MOBILE)
+		.add("User-Agent", UserAgents.DEFAULT_BROWSER)
 		.build()
 
 	override suspend fun getListPage(page: Int, filter: MangaListFilter?): List<Manga> {
diff --git a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/madara/id/Shinigami.kt b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/madara/id/Shinigami.kt
index e8f04983a..28325a421 100644
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/madara/id/Shinigami.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/madara/id/Shinigami.kt
@@ -12,7 +12,7 @@ import java.util.*
 internal class Shinigami(context: MangaLoaderContext) :
 	MadaraParser(context, MangaSource.SHINIGAMI, "shinigamitoon.com", 10) {
 
-	private val userAgentKey = ConfigKey.UserAgent(UserAgents.CHROME_MOBILE)
+	private val userAgentKey = ConfigKey.UserAgent(UserAgents.DEFAULT_BROWSER)
 	override val tagPrefix = "genre/"
 	override val listUrl = "series/"
 	override val sourceLocale: Locale = Locale.ENGLISH
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 1884cce0d..450b9eb9c 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
@@ -32,7 +32,7 @@ internal class RemangaParser(
 	context: MangaLoaderContext,
 ) : PagedMangaParser(context, MangaSource.REMANGA, PAGE_SIZE), MangaParserAuthProvider, Interceptor {
 
-	private val userAgentKey = ConfigKey.UserAgent(UserAgents.CHROME_MOBILE)
+	private val userAgentKey = ConfigKey.UserAgent(UserAgents.DEFAULT_BROWSER)
 
 	private val baseHeaders: Headers
 		get() = Headers.Builder()
diff --git a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/vi/HentaiVNParser.kt b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/vi/HentaiVNParser.kt
index d5ea7409d..a982478af 100644
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/vi/HentaiVNParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/vi/HentaiVNParser.kt
@@ -26,7 +26,7 @@ class HentaiVNParser(context: MangaLoaderContext) : MangaParser(context, MangaSo
 	override val configKeyDomain: ConfigKey.Domain = ConfigKey.Domain("hentaivn.red", "hentaivn.autos", "hentaivn.tv")
 
 	// hentaivn has created 2 different interfaces for mobile and desktop, and Cloudflare detects whether it's mobile or not even with a desktop user agent.
-	override val headers: Headers = Headers.Builder().add("User-Agent", UserAgents.CHROME_MOBILE).build()
+	override val headers: Headers = Headers.Builder().add("User-Agent", UserAgents.DEFAULT_BROWSER).build()
 
 	override val availableSortOrders: Set<SortOrder> = EnumSet.of(
 		SortOrder.UPDATED,