diff --git a/app/build.gradle b/app/build.gradle
index 17cc1dbc0..465f241f8 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -71,8 +71,8 @@ android {
             applicationIdSuffix '.release'
 
             //混淆还是有点问题, exoplayer的库出问题了
-            minifyEnabled false
-            //shrinkResources true
+            minifyEnabled true
+            shrinkResources true
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
         debug {
diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index 119452b38..7dd9cb948 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -234,8 +234,7 @@
 
 ## 保证该私有变量不被混淆
 -keepclassmembers class com.google.android.exoplayer2.upstream.cache.CacheDataSource$Factory {
-    #noinspection ShrinkerUnresolvedReference
-    private DataSource.Factory upstreamDataSourceFactory;
+    *** upstreamDataSourceFactory;
 }
 
 ## 对外提供api
diff --git a/app/src/main/java/io/legado/app/help/book/BookExtensions.kt b/app/src/main/java/io/legado/app/help/book/BookExtensions.kt
index 51f0a9587..45c441521 100644
--- a/app/src/main/java/io/legado/app/help/book/BookExtensions.kt
+++ b/app/src/main/java/io/legado/app/help/book/BookExtensions.kt
@@ -93,6 +93,9 @@ fun Book.getLocalUri(): Uri {
         val fileDoc = treeFileDoc.find(originName, 3)
         if (fileDoc != null) {
             localUriCache[bookUrl] = fileDoc.uri
+            //更新bookUrl 重启不用再找一遍
+            bookUrl = fileDoc.toString()
+            save()
             return fileDoc.uri
         }
         localUriCache[bookUrl] = uri