diff --git a/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeByJSonPath.kt b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeByJSonPath.kt
index e7360da7e..1cc90b89e 100644
--- a/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeByJSonPath.kt
+++ b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeByJSonPath.kt
@@ -1,12 +1,14 @@
 package io.legado.app.model.analyzeRule
 
 import android.text.TextUtils
+import androidx.annotation.Keep
 import com.jayway.jsonpath.JsonPath
 import com.jayway.jsonpath.ReadContext
 import io.legado.app.utils.splitNotBlank
 import java.util.*
 import java.util.regex.Pattern
 
+@Keep
 class AnalyzeByJSonPath {
     private var ctx: ReadContext? = null
 
diff --git a/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeByJSoup.kt b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeByJSoup.kt
index 38fb633c5..7e49ac677 100644
--- a/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeByJSoup.kt
+++ b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeByJSoup.kt
@@ -2,6 +2,7 @@ package io.legado.app.model.analyzeRule
 
 import android.text.TextUtils.isEmpty
 import android.text.TextUtils.join
+import androidx.annotation.Keep
 import io.legado.app.utils.splitNotBlank
 import org.jsoup.Jsoup
 import org.jsoup.nodes.Element
@@ -15,7 +16,7 @@ import java.util.*
  * Created by GKF on 2018/1/25.
  * 书源规则解析
  */
-
+@Keep
 class AnalyzeByJSoup {
     private var element: Element? = null
 
diff --git a/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeByRegex.kt b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeByRegex.kt
index 5475df744..05851b423 100644
--- a/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeByRegex.kt
+++ b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeByRegex.kt
@@ -1,8 +1,10 @@
 package io.legado.app.model.analyzeRule
 
+import androidx.annotation.Keep
 import java.util.*
 import java.util.regex.Pattern
 
+@Keep
 object AnalyzeByRegex {
 
     fun getElement(res: String, regs: Array<String>, index: Int = 0): List<String>? {
diff --git a/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeByXPath.kt b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeByXPath.kt
index 707ab9a22..52f3b7560 100644
--- a/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeByXPath.kt
+++ b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeByXPath.kt
@@ -1,6 +1,7 @@
 package io.legado.app.model.analyzeRule
 
 import android.text.TextUtils
+import androidx.annotation.Keep
 import io.legado.app.utils.splitNotBlank
 import org.jsoup.nodes.Document
 import org.jsoup.nodes.Element
@@ -9,6 +10,7 @@ import org.seimicrawler.xpath.JXDocument
 import org.seimicrawler.xpath.JXNode
 import java.util.*
 
+@Keep
 class AnalyzeByXPath {
     private var jxDocument: JXDocument? = null
     private var jxNode: JXNode? = null
diff --git a/app/src/main/java/io/legado/app/model/rss/RssParserByRule.kt b/app/src/main/java/io/legado/app/model/rss/RssParserByRule.kt
index a9c193545..b06950031 100644
--- a/app/src/main/java/io/legado/app/model/rss/RssParserByRule.kt
+++ b/app/src/main/java/io/legado/app/model/rss/RssParserByRule.kt
@@ -1,5 +1,6 @@
 package io.legado.app.model.rss
 
+import androidx.annotation.Keep
 import io.legado.app.App
 import io.legado.app.R
 import io.legado.app.data.entities.RssArticle
@@ -8,6 +9,7 @@ import io.legado.app.model.Debug
 import io.legado.app.model.analyzeRule.AnalyzeRule
 import io.legado.app.utils.NetworkUtils
 
+@Keep
 object RssParserByRule {
 
     @Throws(Exception::class)