diff --git a/src/en/koharu/build.gradle b/src/en/koharu/build.gradle
index c650ebf32..1397ba253 100644
--- a/src/en/koharu/build.gradle
+++ b/src/en/koharu/build.gradle
@@ -1,7 +1,7 @@
 ext {
     extName = 'Koharu'
     extClass = '.Koharu'
-    extVersionCode = 3
+    extVersionCode = 4
     isNsfw = true
 }
 
diff --git a/src/en/koharu/src/eu/kanade/tachiyomi/extension/en/koharu/Koharu.kt b/src/en/koharu/src/eu/kanade/tachiyomi/extension/en/koharu/Koharu.kt
index aa6fc94f0..89abffb26 100644
--- a/src/en/koharu/src/eu/kanade/tachiyomi/extension/en/koharu/Koharu.kt
+++ b/src/en/koharu/src/eu/kanade/tachiyomi/extension/en/koharu/Koharu.kt
@@ -6,7 +6,6 @@ import androidx.preference.ListPreference
 import androidx.preference.PreferenceScreen
 import androidx.preference.SwitchPreferenceCompat
 import eu.kanade.tachiyomi.network.GET
-import eu.kanade.tachiyomi.network.POST
 import eu.kanade.tachiyomi.network.interceptor.rateLimit
 import eu.kanade.tachiyomi.source.ConfigurableSource
 import eu.kanade.tachiyomi.source.model.FilterList
@@ -78,8 +77,15 @@ class Koharu : HttpSource(), ConfigurableSource {
             "780" -> data.`780` ?: data.`980` ?: data.`0`
             else -> data.`0`
         }
+        val realQuality = when (dataKey) {
+            data.`1600` -> "1600"
+            data.`1280` -> "1280"
+            data.`980` -> "980"
+            data.`780` -> "780"
+            else -> "1600"
+        }
 
-        val imagesResponse = client.newCall(POST("$apiBooksUrl/data/${entry.id}/${entry.public_key}/${dataKey.id}/${dataKey.public_key}", headers)).execute()
+        val imagesResponse = client.newCall(GET("$apiBooksUrl/data/${entry.id}/${entry.public_key}/${dataKey.id}/${dataKey.public_key}?v=${entry.updated_at}&w=$realQuality", headers)).execute()
         val images = imagesResponse.parseAs<ImagesInfo>()
         return images
     }