diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/BMCLAPIDownloadProvider.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/BMCLAPIDownloadProvider.java
index 2dc370af8..ac7931867 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/BMCLAPIDownloadProvider.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/BMCLAPIDownloadProvider.java
@@ -33,26 +33,11 @@ public class BMCLAPIDownloadProvider implements DownloadProvider {
     private BMCLAPIDownloadProvider() {
     }
 
-    @Override
-    public String getLibraryBaseURL() {
-        return "https://bmclapi2.bangbang93.com/libraries/";
-    }
-
     @Override
     public String getVersionListURL() {
         return "https://bmclapi2.bangbang93.com/mc/game/version_manifest.json";
     }
 
-    @Override
-    public String getVersionBaseURL() {
-        return "https://bmclapi2.bangbang93.com/versions/";
-    }
-
-    @Override
-    public String getAssetIndexBaseURL() {
-        return "https://bmclapi2.bangbang93.com/indexes/";
-    }
-
     @Override
     public String getAssetBaseURL() {
         return "https://bmclapi2.bangbang93.com/assets/";
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/DownloadProvider.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/DownloadProvider.java
index d6ef16928..372747958 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/DownloadProvider.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/DownloadProvider.java
@@ -24,14 +24,8 @@ package org.jackhuang.hmcl.download;
  */
 public interface DownloadProvider {
 
-    String getLibraryBaseURL();
-
     String getVersionListURL();
 
-    String getVersionBaseURL();
-
-    String getAssetIndexBaseURL();
-
     String getAssetBaseURL();
 
     /**
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/MojangDownloadProvider.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/MojangDownloadProvider.java
index db67d0e30..f0d843116 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/MojangDownloadProvider.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/MojangDownloadProvider.java
@@ -28,26 +28,11 @@ import org.jackhuang.hmcl.download.optifine.OptiFineVersionList;
  */
 public class MojangDownloadProvider implements DownloadProvider {
 
-    @Override
-    public String getLibraryBaseURL() {
-        return "https://libraries.minecraft.net/";
-    }
-
     @Override
     public String getVersionListURL() {
         return "https://launchermeta.mojang.com/mc/game/version_manifest.json";
     }
 
-    @Override
-    public String getVersionBaseURL() {
-        return "https://s3.amazonaws.com/Minecraft.Download/versions/";
-    }
-
-    @Override
-    public String getAssetIndexBaseURL() {
-        return "https://s3.amazonaws.com/Minecraft.Download/indexes/";
-    }
-
     @Override
     public String getAssetBaseURL() {
         return "https://resources.download.minecraft.net/";