diff --git a/src/main/kotlin/org/koitharu/kotatsu/parsers/MangaParser.kt b/src/main/kotlin/org/koitharu/kotatsu/parsers/MangaParser.kt
index 0c2bc8fd..3d4047cd 100644
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/MangaParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/MangaParser.kt
@@ -1,7 +1,6 @@
 package org.koitharu.kotatsu.parsers
 
 import androidx.annotation.CallSuper
-import androidx.annotation.VisibleForTesting
 import okhttp3.Headers
 import okhttp3.HttpUrl
 import org.jsoup.nodes.Element
@@ -35,8 +34,7 @@ abstract class MangaParser @InternalParsersApi constructor(val source: MangaSour
 	 */
 	protected abstract val configKeyDomain: ConfigKey.Domain
 
-	@VisibleForTesting(otherwise = VisibleForTesting.PROTECTED)
-	internal open val headers: Headers? = null
+	open val headers: Headers? = null
 
 	/**
 	 * Used as fallback if value of `sortOrder` passed to [getList] is null
diff --git a/src/main/kotlin/org/koitharu/kotatsu/parsers/exception/CloudFlareProtectedException.kt b/src/main/kotlin/org/koitharu/kotatsu/parsers/exception/CloudFlareProtectedException.kt
index 75337a12..e06415e3 100644
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/exception/CloudFlareProtectedException.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/exception/CloudFlareProtectedException.kt
@@ -1,7 +1,9 @@
 package org.koitharu.kotatsu.parsers.exception
 
+import okhttp3.Headers
 import okio.IOException
 
 class CloudFlareProtectedException(
 	val url: String,
+	val headers: Headers,
 ) : IOException("Protected by CloudFlare: $url")
\ No newline at end of file
diff --git a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/RemangaParser.kt b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/RemangaParser.kt
index dcdcdab5..48f4530e 100644
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/RemangaParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/RemangaParser.kt
@@ -227,13 +227,13 @@ internal class RemangaParser(
 		return jo.getJSONObject("content").getString("username")
 	}
 
-	private fun getApiHeaders(): Headers? {
+	private fun getApiHeaders(): Headers {
 		val userCookie = context.cookieJar.getCookies(getDomain()).find {
 			it.name == "user"
-		} ?: return null
+		} ?: return headers
 		val jo = JSONObject(URLDecoder.decode(userCookie.value, Charsets.UTF_8.name()))
-		val accessToken = jo.getStringOrNull("access_token") ?: return null
-		return Headers.headersOf("authorization", "bearer $accessToken")
+		val accessToken = jo.getStringOrNull("access_token") ?: return headers
+		return headers.newBuilder().add("authorization", "bearer $accessToken").build()
 	}
 
 	private fun copyCookies() {
diff --git a/src/test/kotlin/org/koitharu/kotatsu/parsers/CloudFlareInterceptor.kt b/src/test/kotlin/org/koitharu/kotatsu/parsers/CloudFlareInterceptor.kt
index 5f9a64c3..957eb889 100644
--- a/src/test/kotlin/org/koitharu/kotatsu/parsers/CloudFlareInterceptor.kt
+++ b/src/test/kotlin/org/koitharu/kotatsu/parsers/CloudFlareInterceptor.kt
@@ -13,11 +13,15 @@ private const val SERVER_CLOUDFLARE = "cloudflare"
 class CloudFlareInterceptor : Interceptor {
 
 	override fun intercept(chain: Interceptor.Chain): Response {
-		val response = chain.proceed(chain.request())
+		val request = chain.request()
+		val response = chain.proceed(request)
 		if (response.code == HTTP_FORBIDDEN || response.code == HTTP_UNAVAILABLE) {
 			if (response.header(HEADER_SERVER)?.startsWith(SERVER_CLOUDFLARE) == true) {
 				response.closeQuietly()
-				throw CloudFlareProtectedException(response.request.url.toString())
+				throw CloudFlareProtectedException(
+					url = response.request.url.toString(),
+					headers = request.headers,
+				)
 			}
 		}
 		return response