diff --git a/src/pt/yomumangas/build.gradle b/src/pt/yomumangas/build.gradle
index b79a7a163..8b3230f43 100644
--- a/src/pt/yomumangas/build.gradle
+++ b/src/pt/yomumangas/build.gradle
@@ -6,7 +6,7 @@ ext {
     extName = 'Yomu Mangás'
     pkgNameSuffix = 'pt.yomumangas'
     extClass = '.YomuMangas'
-    extVersionCode = 2
+    extVersionCode = 3
     isNsfw = true
 }
 
diff --git a/src/pt/yomumangas/src/eu/kanade/tachiyomi/extension/pt/yomumangas/YomuMangasDto.kt b/src/pt/yomumangas/src/eu/kanade/tachiyomi/extension/pt/yomumangas/YomuMangasDto.kt
index 1035ff92e..e742993d8 100644
--- a/src/pt/yomumangas/src/eu/kanade/tachiyomi/extension/pt/yomumangas/YomuMangasDto.kt
+++ b/src/pt/yomumangas/src/eu/kanade/tachiyomi/extension/pt/yomumangas/YomuMangasDto.kt
@@ -32,7 +32,7 @@ data class YomuMangasSeriesDto(
     val id: Int,
     val slug: String,
     val title: String,
-    val cover: String,
+    val cover: String? = null,
     val status: String,
     val authors: List<String>? = emptyList(),
     val artists: List<String>? = emptyList(),
@@ -56,7 +56,7 @@ data class YomuMangasSeriesDto(
             "TRANSLATING" -> SManga.PUBLISHING_FINISHED
             else -> SManga.UNKNOWN
         }
-        thumbnail_url = "${YomuMangas.CDN_URL}/$cover"
+        thumbnail_url = cover?.let { "${YomuMangas.CDN_URL}/$it" }
         url = "/manga/$id/$slug"
     }
 }
@@ -84,7 +84,7 @@ data class YomuMangasChapterDto(
 
     companion object {
         private val DATE_FORMATTER by lazy {
-            SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSZZZZZ", Locale.US)
+            SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US)
         }
     }
 }