diff --git a/android/app/src/main/kotlin/app/revanced/manager/flutter/MainActivity.kt b/android/app/src/main/kotlin/app/revanced/manager/flutter/MainActivity.kt
index 4f4ed0d1..6894c9f1 100644
--- a/android/app/src/main/kotlin/app/revanced/manager/flutter/MainActivity.kt
+++ b/android/app/src/main/kotlin/app/revanced/manager/flutter/MainActivity.kt
@@ -219,6 +219,9 @@ class MainActivity : FlutterActivity() {
         keystorePassword: String
     ) {
         val inFile = File(inFilePath)
+        // Necessary because the file is copied from a nonwriteable location.
+        inFile.setWritable(true)
+        inFile.setReadable(true)
         val outFile = File(outFilePath)
         val integrations = File(integrationsPath)
         val keyStoreFile = File(keyStoreFilePath)