diff --git a/src/all/mangaplus/build.gradle b/src/all/mangaplus/build.gradle
index 55a59482e..b35174d9b 100644
--- a/src/all/mangaplus/build.gradle
+++ b/src/all/mangaplus/build.gradle
@@ -6,7 +6,7 @@ ext {
     extName = 'MANGA Plus by SHUEISHA'
     pkgNameSuffix = 'all.mangaplus'
     extClass = '.MangaPlusFactory'
-    extVersionCode = 15
+    extVersionCode = 16
     libVersion = '1.2'
 }
 
diff --git a/src/all/mangaplus/src/eu/kanade/tachiyomi/extension/all/mangaplus/MangaPlus.kt b/src/all/mangaplus/src/eu/kanade/tachiyomi/extension/all/mangaplus/MangaPlus.kt
index 15a3540b8..5ecbe83bd 100644
--- a/src/all/mangaplus/src/eu/kanade/tachiyomi/extension/all/mangaplus/MangaPlus.kt
+++ b/src/all/mangaplus/src/eu/kanade/tachiyomi/extension/all/mangaplus/MangaPlus.kt
@@ -76,6 +76,25 @@ abstract class MangaPlus(
 
     private var titleList: List<Title>? = null
 
+    /**
+     * MANGA Plus recently started supporting other languages, but
+     * they are not defined by the API. This is a temporary fix
+     * to properly filter the titles while their API doesn't get an update.
+     */
+    private val titlesToFix: Map<Int, Language> = mapOf(
+        // Thai
+        100079 to Language.THAI,
+        100080 to Language.THAI,
+        100082 to Language.THAI,
+        100120 to Language.THAI,
+        100121 to Language.THAI,
+
+        // Brazilian Portuguese
+        100149 to Language.PORTUGUESE_BR,
+        100150 to Language.PORTUGUESE_BR,
+        100151 to Language.PORTUGUESE_BR
+    )
+
     override fun popularMangaRequest(page: Int): Request {
         val newHeaders = headersBuilder()
             .set("Referer", "$baseUrl/manga_list/hot")
@@ -91,6 +110,7 @@ abstract class MangaPlus(
             throw Exception(result.error!!.langPopup.body)
 
         titleList = result.success.titleRankingView!!.titles
+            .fixWrongLanguages()
             .filter { it.language == langCode }
 
         val mangas = titleList!!.map {
@@ -123,12 +143,14 @@ abstract class MangaPlus(
 
         if (popularResponse.success != null) {
             titleList = popularResponse.success.titleRankingView!!.titles
+                .fixWrongLanguages()
                 .filter { it.language == langCode }
         }
 
         val mangas = result.success.webHomeView!!.groups
             .flatMap { it.titles }
             .mapNotNull { it.title }
+            .fixWrongLanguages()
             .filter { it.language == langCode }
             .map {
                 SManga.create().apply {
@@ -162,6 +184,7 @@ abstract class MangaPlus(
             throw Exception(result.error!!.langPopup.body)
 
         titleList = result.success.allTitlesView!!.titles
+            .fixWrongLanguages()
             .filter { it.language == langCode }
 
         val mangas = titleList!!.map {
@@ -421,9 +444,14 @@ abstract class MangaPlus(
         return response
     }
 
+    private fun List<Title>.fixWrongLanguages(): List<Title> = map { title ->
+        val correctLanguage = titlesToFix[title.titleId]
+        if (correctLanguage != null) title.copy(language = correctLanguage) else title
+    }
+
     private val ErrorResult.langPopup: Popup
-        get() = when (lang) {
-            "es" -> spanishPopup
+        get() = when (internalLang) {
+            "esp" -> spanishPopup
             else -> englishPopup
         }
 
@@ -452,7 +480,7 @@ abstract class MangaPlus(
     companion object {
         private const val API_URL = "https://jumpg-webapi.tokyo-cdn.com/api"
         private const val USER_AGENT = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) " +
-            "AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.183 Safari/537.36"
+            "AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.114 Safari/537.36"
 
         private val HEX_GROUP = "(.{1,2})".toRegex()
 
diff --git a/src/all/mangaplus/src/eu/kanade/tachiyomi/extension/all/mangaplus/MangaPlusApi.kt b/src/all/mangaplus/src/eu/kanade/tachiyomi/extension/all/mangaplus/MangaPlusApi.kt
index a166950ad..1586ea828 100644
--- a/src/all/mangaplus/src/eu/kanade/tachiyomi/extension/all/mangaplus/MangaPlusApi.kt
+++ b/src/all/mangaplus/src/eu/kanade/tachiyomi/extension/all/mangaplus/MangaPlusApi.kt
@@ -88,7 +88,16 @@ enum class Language(val id: Int) {
 
     @ProtoNumber(1)
     @SerializedName("1")
-    SPANISH(1)
+    SPANISH(1),
+
+    // Temporary add the languages that are not present on the API yet.
+    // @ProtoNumber(2)
+    // @SerializedName("2")
+    THAI(2),
+
+    // @ProtoNumber(3)
+    // @SerializedName("3")
+    PORTUGUESE_BR(3)
 }
 
 @Serializable
@@ -216,6 +225,8 @@ const val DECODE_SCRIPT: String =
     var Language = new Enum("Language")
         .add("ENGLISH", 0)
         .add("SPANISH", 1);
+    //     .add("THAI", 2)
+    //     .add("PORTUGUESE_BR", 3);
 
     var UpdatedTitleGroup = new Type("UpdatedTitleGroup")
         .add(new Field("groupName", 1, "string"))
diff --git a/src/all/mangaplus/src/eu/kanade/tachiyomi/extension/all/mangaplus/MangaPlusFactory.kt b/src/all/mangaplus/src/eu/kanade/tachiyomi/extension/all/mangaplus/MangaPlusFactory.kt
index 788147640..927900192 100644
--- a/src/all/mangaplus/src/eu/kanade/tachiyomi/extension/all/mangaplus/MangaPlusFactory.kt
+++ b/src/all/mangaplus/src/eu/kanade/tachiyomi/extension/all/mangaplus/MangaPlusFactory.kt
@@ -4,13 +4,17 @@ import eu.kanade.tachiyomi.source.Source
 import eu.kanade.tachiyomi.source.SourceFactory
 
 class MangaPlusFactory : SourceFactory {
-    override fun createSources(): List<Source> = getAllMangaPlus()
+    override fun createSources(): List<Source> = listOf(
+        MangaPlusEnglish(),
+        MangaPlusSpanish(),
+        MangaPlusThai(),
+        MangaPlusPortuguese()
+    )
 }
 
 class MangaPlusEnglish : MangaPlus("en", "eng", Language.ENGLISH)
 class MangaPlusSpanish : MangaPlus("es", "esp", Language.SPANISH)
+class MangaPlusThai : MangaPlus("th", "eng", Language.THAI)
 
-fun getAllMangaPlus(): List<Source> = listOf(
-    MangaPlusEnglish(),
-    MangaPlusSpanish()
-)
+// The titles have the Portugal flag in the thumbnail, but the text of the translations is Brazilian.
+class MangaPlusPortuguese : MangaPlus("pt-BR", "eng", Language.PORTUGUESE_BR)