diff --git a/app/src/main/java/io/legado/app/ui/changecover/ChangeCoverDialog.kt b/app/src/main/java/io/legado/app/ui/changecover/ChangeCoverDialog.kt
index 03db768f4..a0488160f 100644
--- a/app/src/main/java/io/legado/app/ui/changecover/ChangeCoverDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/changecover/ChangeCoverDialog.kt
@@ -15,6 +15,7 @@ import kotlinx.android.synthetic.main.dialog_change_source.*
 class ChangeCoverDialog : DialogFragment() {
 
     private lateinit var viewModel: ChangeCoverViewModel
+    private lateinit var adapter: CoverAdapter
 
     override fun onStart() {
         super.onStart()
@@ -36,6 +37,8 @@ class ChangeCoverDialog : DialogFragment() {
         super.onViewCreated(view, savedInstanceState)
         tool_bar.setTitle(R.string.change_cover_source)
         recycler_view.layoutManager = GridLayoutManager(requireContext(), 3)
+        adapter = CoverAdapter(requireContext())
+        recycler_view.adapter = adapter
     }
 
 }
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
index cb1547a01..be4632b0d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -9,7 +9,7 @@ buildscript {
         maven { url 'https://plugins.gradle.org/m2/' }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.5.2'
+        classpath 'com.android.tools.build:gradle:3.5.3'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
         classpath 'de.timfreiheit.resourceplaceholders:placeholders:0.3'
         classpath 'com.google.gms:google-services:4.3.3'