diff --git a/src/en/fmovies/build.gradle b/src/en/fmovies/build.gradle
index 709ddf4f0..8334e606c 100644
--- a/src/en/fmovies/build.gradle
+++ b/src/en/fmovies/build.gradle
@@ -1,7 +1,7 @@
 ext {
     extName = 'FMovies'
     extClass = '.FMovies'
-    extVersionCode = 19
+    extVersionCode = 20
 }
 
 apply from: "$rootDir/common.gradle"
diff --git a/src/en/fmovies/src/eu/kanade/tachiyomi/animeextension/en/fmovies/FmoviesUtils.kt b/src/en/fmovies/src/eu/kanade/tachiyomi/animeextension/en/fmovies/FmoviesUtils.kt
index 2c04fa2b2..31b7a95cd 100644
--- a/src/en/fmovies/src/eu/kanade/tachiyomi/animeextension/en/fmovies/FmoviesUtils.kt
+++ b/src/en/fmovies/src/eu/kanade/tachiyomi/animeextension/en/fmovies/FmoviesUtils.kt
@@ -62,13 +62,15 @@ class FmoviesUtils(private val client: OkHttpClient, private val headers: Header
 
     // ===================== Encryption ================================
     fun vrfEncrypt(input: String): String {
-        val rc4Key = SecretKeySpec("FWsfu0KQd9vxYGNB".toByteArray(), "RC4")
+        val rc4Key = SecretKeySpec("Ij4aiaQXgluXQRs6".toByteArray(), "RC4")
         val cipher = Cipher.getInstance("RC4")
-        cipher.init(Cipher.DECRYPT_MODE, rc4Key, cipher.parameters)
+        cipher.init(Cipher.ENCRYPT_MODE, rc4Key, cipher.parameters)
 
         var vrf = cipher.doFinal(input.toByteArray())
         vrf = Base64.encode(vrf, Base64.URL_SAFE or Base64.NO_WRAP)
-        vrf = rot13(vrf)
+//        vrf = rot13(vrf)
+        vrf = Base64.encode(vrf, Base64.URL_SAFE or Base64.NO_WRAP)
+        vrf.reverse()
         vrf = Base64.encode(vrf, Base64.URL_SAFE or Base64.NO_WRAP)
         vrf = vrfShift(vrf)
         val stringVrf = vrf.toString(Charsets.UTF_8)
@@ -101,7 +103,7 @@ class FmoviesUtils(private val client: OkHttpClient, private val headers: Header
 
     private fun vrfShift(vrf: ByteArray): ByteArray {
         for (i in vrf.indices) {
-            val shift = arrayOf(-4, -2, -6, 5, -2)[i % 5]
+            val shift = arrayOf(4, 3, -2, 5, 2, -4, -4, 2)[i % 8]
             vrf[i] = vrf[i].plus(shift).toByte()
         }
         return vrf