diff --git a/app/build.gradle b/app/build.gradle
index 6fcbcac..c74d6a4 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -8,7 +8,7 @@ android {
     buildToolsVersion "28.0.3"
     defaultConfig {
         applicationId "org.itxtech.daedalus"
-        minSdkVersion 15
+        minSdkVersion 21
         targetSdkVersion 28
         versionCode 19
         versionName "1.14.0"
@@ -39,12 +39,12 @@ android {
 
 dependencies {
     //Support
-    implementation 'androidx.appcompat:appcompat:1.1.0-beta01'
+    implementation 'androidx.appcompat:appcompat:1.1.0-rc01'
     implementation 'androidx.legacy:legacy-support-v4:1.0.0'
     implementation 'androidx.percentlayout:percentlayout:1.0.0'
     implementation 'androidx.cardview:cardview:1.0.0'
-    implementation 'com.google.android.material:material:1.1.0-alpha07'
-    implementation 'androidx.recyclerview:recyclerview:1.1.0-alpha06'
+    implementation 'com.google.android.material:material:1.1.0-alpha08'
+    implementation 'androidx.recyclerview:recyclerview:1.1.0-beta01'
     //DNS
     implementation 'org.pcap4j:pcap4j-core:1.7.6'
     implementation 'org.pcap4j:pcap4j-packetfactory-static:1.7.6'
@@ -52,7 +52,7 @@ dependencies {
     implementation 'com.google.code.gson:gson:2.8.5'
     implementation 'com.squareup.okhttp3:okhttp:3.14.1'
     //Analytics
-    implementation 'com.google.firebase:firebase-core:16.0.9'
+    implementation 'com.google.firebase:firebase-core:17.0.1'
     implementation 'com.crashlytics.sdk.android:crashlytics:2.10.1'
 }
 
diff --git a/app/src/main/java/org/itxtech/daedalus/Daedalus.java b/app/src/main/java/org/itxtech/daedalus/Daedalus.java
index 03dea0b..9f9130e 100644
--- a/app/src/main/java/org/itxtech/daedalus/Daedalus.java
+++ b/app/src/main/java/org/itxtech/daedalus/Daedalus.java
@@ -135,7 +135,6 @@ public class Daedalus extends Application {
     }
 
     public static void initRuleResolver() {
-        if (Daedalus.getPrefs().getBoolean("settings_local_rules_resolution", false)) {
             ArrayList<String> pendingLoad = new ArrayList<>();
             ArrayList<Rule> usingRules = configurations.getUsingRules();
             if (usingRules != null && usingRules.size() > 0) {
@@ -160,13 +159,11 @@ public class Daedalus extends Application {
                 }
             } else {
                 RuleResolver.clear();
-            }
         }
     }
 
     public static void setRulesChanged() {
-        if (DaedalusVpnService.isActivated() &&
-                getPrefs().getBoolean("settings_allow_dynamic_rule_reload", false)) {
+        if (DaedalusVpnService.isActivated()) {
             initRuleResolver();
         }
     }
diff --git a/app/src/main/java/org/itxtech/daedalus/fragment/RuleConfigFragment.java b/app/src/main/java/org/itxtech/daedalus/fragment/RuleConfigFragment.java
index 88c2d6c..1c4caef 100644
--- a/app/src/main/java/org/itxtech/daedalus/fragment/RuleConfigFragment.java
+++ b/app/src/main/java/org/itxtech/daedalus/fragment/RuleConfigFragment.java
@@ -187,11 +187,7 @@ public class RuleConfigFragment extends ConfigFragment {
 
         ClickPreference ruleImportExternal = (ClickPreference) findPreference("ruleImportExternal");
         ruleImportExternal.setOnPreferenceClickListener(preference -> {
-            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
-                performFileSearch();
-            } else {
-                Snackbar.make(getView(), R.string.notice_legacy_api, Snackbar.LENGTH_LONG).show();
-            }
+            performFileSearch();
             return false;
         });
 
diff --git a/app/src/main/java/org/itxtech/daedalus/fragment/RulesFragment.java b/app/src/main/java/org/itxtech/daedalus/fragment/RulesFragment.java
index fa3e621..2dffccc 100644
--- a/app/src/main/java/org/itxtech/daedalus/fragment/RulesFragment.java
+++ b/app/src/main/java/org/itxtech/daedalus/fragment/RulesFragment.java
@@ -17,7 +17,6 @@ import com.google.android.material.snackbar.Snackbar;
 import org.itxtech.daedalus.Daedalus;
 import org.itxtech.daedalus.R;
 import org.itxtech.daedalus.activity.ConfigActivity;
-import org.itxtech.daedalus.service.DaedalusVpnService;
 import org.itxtech.daedalus.util.Rule;
 
 import java.io.File;
@@ -61,14 +60,6 @@ public class RulesFragment extends ToolbarFragment implements Toolbar.OnMenuItem
         ItemTouchHelper itemTouchHelper = new ItemTouchHelper(new ItemTouchHelper.Callback() {
             @Override
             public int getMovementFlags(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder) {
-                if (!Daedalus.getPrefs().getBoolean("settings_allow_dynamic_rule_reload", false)) {
-                    if (viewHolder instanceof RulesFragment.ViewHolder) {
-                        Rule rule = Rule.getRuleById(((ViewHolder) viewHolder).getId());
-                        if (rule != null && rule.isServiceAndUsing()) {
-                            return 0;
-                        }
-                    }
-                }
                 return makeMovementFlags(0, ItemTouchHelper.START | ItemTouchHelper.END);
             }
 
@@ -121,11 +112,7 @@ public class RulesFragment extends ToolbarFragment implements Toolbar.OnMenuItem
         }
 
         if (id == R.id.action_reload) {
-            if (!Daedalus.getPrefs().getBoolean("settings_allow_dynamic_rule_reload", false)) {
-                Snackbar.make(getView(), R.string.notice_check_dynamic_rule_reload, Snackbar.LENGTH_SHORT).show();
-            } else {
-                Daedalus.setRulesChanged();
-            }
+            Daedalus.setRulesChanged();
         }
         return true;
     }
@@ -233,24 +220,18 @@ public class RulesFragment extends ToolbarFragment implements Toolbar.OnMenuItem
 
         @Override
         public void onClick(View v) {
-            if ((!Daedalus.getPrefs().getBoolean("settings_allow_dynamic_rule_reload", false) &&
-                    !DaedalusVpnService.isActivated()) ||
-                    Daedalus.getPrefs().getBoolean("settings_allow_dynamic_rule_reload", false)) {
                 Rule rule = Rule.getRuleById(id);
                 if (rule != null) {
                     rule.setUsing(!v.isSelected());
                     v.setSelected(!v.isSelected());
                     Daedalus.setRulesChanged();
                 }
-            }
         }
 
         @Override
         public boolean onLongClick(View v) {
             Rule rule = Rule.getRuleById(id);
-            if (rule != null &&
-                    (Daedalus.getPrefs().getBoolean("settings_allow_dynamic_rule_reload", false) ||
-                            !rule.isServiceAndUsing())) {
+            if (rule != null) {
                 Daedalus.getInstance().startActivity(new Intent(Daedalus.getInstance(), ConfigActivity.class)
                         .putExtra(ConfigActivity.LAUNCH_ACTION_ID, Integer.parseInt(id))
                         .putExtra(ConfigActivity.LAUNCH_ACTION_FRAGMENT, ConfigActivity.LAUNCH_FRAGMENT_RULE)
diff --git a/app/src/main/java/org/itxtech/daedalus/provider/HttpsIetfProvider.java b/app/src/main/java/org/itxtech/daedalus/provider/HttpsIetfProvider.java
index 0b81e91..6cb86cb 100644
--- a/app/src/main/java/org/itxtech/daedalus/provider/HttpsIetfProvider.java
+++ b/app/src/main/java/org/itxtech/daedalus/provider/HttpsIetfProvider.java
@@ -8,7 +8,6 @@ import org.minidns.dnsmessage.DnsMessage;
 import org.pcap4j.packet.IpPacket;
 
 import java.io.IOException;
-import java.util.concurrent.TimeUnit;
 
 /**
  * Daedalus Project
@@ -22,14 +21,8 @@ import java.util.concurrent.TimeUnit;
  * (at your option) any later version.
  */
 public class HttpsIetfProvider extends HttpsProvider {
-    private static final OkHttpClient HTTP_CLIENT = new OkHttpClient.Builder()
-            .connectTimeout(10, TimeUnit.SECONDS)
-            .readTimeout(10, TimeUnit.SECONDS)
-            .writeTimeout(10, TimeUnit.SECONDS)
-            .addInterceptor((chain) -> chain.proceed(chain.request().newBuilder()
-                    .header("Accept", "application/dns-message")
-                    .build()))
-            .build();
+    private OkHttpClient HTTP_CLIENT = getHttpClient("application/dns-message");
+
 
     public HttpsIetfProvider(ParcelFileDescriptor descriptor, DaedalusVpnService service) {
         super(descriptor, service);
diff --git a/app/src/main/java/org/itxtech/daedalus/provider/HttpsJsonProvider.java b/app/src/main/java/org/itxtech/daedalus/provider/HttpsJsonProvider.java
index 012aa72..a367870 100644
--- a/app/src/main/java/org/itxtech/daedalus/provider/HttpsJsonProvider.java
+++ b/app/src/main/java/org/itxtech/daedalus/provider/HttpsJsonProvider.java
@@ -13,7 +13,6 @@ import org.minidns.record.*;
 import org.pcap4j.packet.IpPacket;
 
 import java.io.IOException;
-import java.util.concurrent.TimeUnit;
 
 /**
  * Daedalus Project
@@ -32,14 +31,7 @@ public class HttpsJsonProvider extends HttpsProvider {
      *             https://developers.google.com/speed/public-dns/docs/dns-over-https
      */
 
-    private static final OkHttpClient HTTP_CLIENT = new OkHttpClient.Builder()
-            .connectTimeout(10, TimeUnit.SECONDS)
-            .readTimeout(10, TimeUnit.SECONDS)
-            .writeTimeout(10, TimeUnit.SECONDS)
-            .addInterceptor((chain) -> chain.proceed(chain.request().newBuilder()
-                    .header("Accept", "application/dns-json")
-                    .build()))
-            .build();
+    private OkHttpClient HTTP_CLIENT = getHttpClient("application/dns-json");
 
     public HttpsJsonProvider(ParcelFileDescriptor descriptor, DaedalusVpnService service) {
         super(descriptor, service);
diff --git a/app/src/main/java/org/itxtech/daedalus/provider/HttpsProvider.java b/app/src/main/java/org/itxtech/daedalus/provider/HttpsProvider.java
index 497739c..e3fed27 100644
--- a/app/src/main/java/org/itxtech/daedalus/provider/HttpsProvider.java
+++ b/app/src/main/java/org/itxtech/daedalus/provider/HttpsProvider.java
@@ -8,9 +8,11 @@ import android.system.OsConstants;
 import android.system.StructPollfd;
 import android.util.Log;
 import androidx.annotation.NonNull;
+import okhttp3.OkHttpClient;
 import org.itxtech.daedalus.Daedalus;
 import org.itxtech.daedalus.service.DaedalusVpnService;
 import org.itxtech.daedalus.util.Logger;
+import org.itxtech.daedalus.util.server.DNSServerHelper;
 import org.minidns.dnsmessage.DnsMessage;
 import org.pcap4j.packet.IpPacket;
 import org.pcap4j.packet.IpSelector;
@@ -21,8 +23,10 @@ import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.net.InetAddress;
+import java.util.Arrays;
 import java.util.Iterator;
 import java.util.LinkedList;
+import java.util.concurrent.TimeUnit;
 
 /**
  * Daedalus Project
@@ -36,7 +40,8 @@ import java.util.LinkedList;
  * (at your option) any later version.
  */
 abstract public class HttpsProvider extends Provider {
-    protected static final String HTTPS_SUFFIX = "https://";
+
+    public static final String HTTPS_SUFFIX = "https://";
 
     private static final String TAG = "HttpsProvider";
 
@@ -46,6 +51,23 @@ abstract public class HttpsProvider extends Provider {
         super(descriptor, service);
     }
 
+    protected OkHttpClient getHttpClient(String accept) {
+        return new OkHttpClient.Builder()
+                .connectTimeout(10, TimeUnit.SECONDS)
+                .readTimeout(10, TimeUnit.SECONDS)
+                .writeTimeout(10, TimeUnit.SECONDS)
+                .addInterceptor((chain) -> chain.proceed(chain.request().newBuilder()
+                        .header("Accept", accept)
+                        .build()))
+                .dns(hostname -> {
+                    if (DNSServerHelper.domainCache.containsKey(hostname)) {
+                        return DNSServerHelper.domainCache.get(hostname);
+                    }
+                    return Arrays.asList(InetAddress.getAllByName(hostname));
+                })
+                .build();
+    }
+
     @TargetApi(Build.VERSION_CODES.LOLLIPOP)
     public void process() {
         try {
diff --git a/app/src/main/java/org/itxtech/daedalus/provider/ProviderPicker.java b/app/src/main/java/org/itxtech/daedalus/provider/ProviderPicker.java
index ed4749c..7dcc492 100644
--- a/app/src/main/java/org/itxtech/daedalus/provider/ProviderPicker.java
+++ b/app/src/main/java/org/itxtech/daedalus/provider/ProviderPicker.java
@@ -24,7 +24,7 @@ public class ProviderPicker {
     //This section mush be the same as the one in arrays.xml
 
     public static Provider getProvider(ParcelFileDescriptor descriptor, DaedalusVpnService service) {
-        switch (Integer.valueOf(Daedalus.getPrefs().getString("settings_dns_query_method", "0"))) {
+        switch (getDnsQueryMethod()) {
             case DNS_QUERY_METHOD_UDP:
                 return new UdpProvider(descriptor, service);
             case DNS_QUERY_METHOD_TCP:
@@ -38,4 +38,8 @@ public class ProviderPicker {
         }
         return new UdpProvider(descriptor, service);
     }
+
+    public static int getDnsQueryMethod() {
+        return Integer.valueOf(Daedalus.getPrefs().getString("settings_dns_query_method", "0"));
+    }
 }
diff --git a/app/src/main/java/org/itxtech/daedalus/service/DaedalusVpnService.java b/app/src/main/java/org/itxtech/daedalus/service/DaedalusVpnService.java
index 1b7a20b..b1ec42b 100644
--- a/app/src/main/java/org/itxtech/daedalus/service/DaedalusVpnService.java
+++ b/app/src/main/java/org/itxtech/daedalus/service/DaedalusVpnService.java
@@ -13,9 +13,7 @@ import android.os.Build;
 import android.os.ParcelFileDescriptor;
 import android.system.OsConstants;
 import android.util.Log;
-
 import androidx.core.app.NotificationCompat;
-
 import org.itxtech.daedalus.Daedalus;
 import org.itxtech.daedalus.R;
 import org.itxtech.daedalus.activity.MainActivity;
@@ -129,7 +127,6 @@ public class DaedalusVpnService extends VpnService implements Runnable {
                     }
 
                     Daedalus.initRuleResolver();
-                    DNSServerHelper.buildPortCache();
 
                     if (this.mThread == null) {
                         this.mThread = new Thread(this, "DaedalusVpn");
@@ -190,7 +187,7 @@ public class DaedalusVpnService extends VpnService implements Runnable {
 
         if (shouldRefresh) {
             RuleResolver.clear();
-            DNSServerHelper.clearPortCache();
+            DNSServerHelper.clearCache();
             Logger.info("Daedalus VPN service has stopped");
         }
 
@@ -237,6 +234,7 @@ public class DaedalusVpnService extends VpnService implements Runnable {
     @Override
     public void run() {
         try {
+            DNSServerHelper.buildCache();
             Builder builder = new Builder()
                     .setSession("Daedalus")
                     .setConfigureIntent(PendingIntent.getActivity(this, 0,
diff --git a/app/src/main/java/org/itxtech/daedalus/util/Configurations.java b/app/src/main/java/org/itxtech/daedalus/util/Configurations.java
index 97afd53..d4a7630 100644
--- a/app/src/main/java/org/itxtech/daedalus/util/Configurations.java
+++ b/app/src/main/java/org/itxtech/daedalus/util/Configurations.java
@@ -2,9 +2,9 @@ package org.itxtech.daedalus.util;
 
 import com.google.gson.Gson;
 import com.google.gson.stream.JsonReader;
-
 import org.itxtech.daedalus.Daedalus;
 import org.itxtech.daedalus.util.server.CustomDNSServer;
+import org.itxtech.daedalus.util.server.DNSServer;
 
 import java.io.File;
 import java.io.FileReader;
@@ -28,6 +28,7 @@ public class Configurations {
 
     private static File file;
 
+    private ArrayList<DNSServer> builtInDNSServers;
     private ArrayList<CustomDNSServer> customDNSServers;
     private ArrayList<String> filterAppObjects;
 
diff --git a/app/src/main/java/org/itxtech/daedalus/util/Rule.java b/app/src/main/java/org/itxtech/daedalus/util/Rule.java
index b7041c8..76713de 100644
--- a/app/src/main/java/org/itxtech/daedalus/util/Rule.java
+++ b/app/src/main/java/org/itxtech/daedalus/util/Rule.java
@@ -1,7 +1,6 @@
 package org.itxtech.daedalus.util;
 
 import org.itxtech.daedalus.Daedalus;
-import org.itxtech.daedalus.service.DaedalusVpnService;
 
 import java.io.File;
 import java.util.ArrayList;
@@ -104,10 +103,6 @@ public class Rule {
         this.downloadUrl = downloadUrl;
     }
 
-    public boolean isServiceAndUsing() {
-        return DaedalusVpnService.isActivated() && isUsing();
-    }
-
     public void addToConfig() {
         if (getType() == Rule.TYPE_HOSTS) {
             Daedalus.configurations.getHostsRules().add(this);
@@ -123,11 +118,9 @@ public class Rule {
             Daedalus.configurations.getDnsmasqRules().remove(this);
         }
         File file = new File(getFileName());
-        Logger.info("Delete rule " + getName() + " result: " + String.valueOf(file.delete()));
+        Logger.info("Delete rule " + getName() + " result: " + file.delete());
     }
 
-
-    //STATIC METHODS
     public static String[] getBuildInRuleNames() {
         ArrayList<String> names = new ArrayList<>(Daedalus.RULES.size());
         for (Rule rule : Daedalus.RULES) {
diff --git a/app/src/main/java/org/itxtech/daedalus/util/server/DNSServerHelper.java b/app/src/main/java/org/itxtech/daedalus/util/server/DNSServerHelper.java
index ad9f1cb..09e9ac4 100644
--- a/app/src/main/java/org/itxtech/daedalus/util/server/DNSServerHelper.java
+++ b/app/src/main/java/org/itxtech/daedalus/util/server/DNSServerHelper.java
@@ -1,12 +1,18 @@
 package org.itxtech.daedalus.util.server;
 
 import android.content.Context;
+import android.net.Uri;
 import org.itxtech.daedalus.Daedalus;
+import org.itxtech.daedalus.provider.HttpsProvider;
+import org.itxtech.daedalus.provider.ProviderPicker;
 import org.itxtech.daedalus.service.DaedalusVpnService;
+import org.itxtech.daedalus.util.Logger;
 
 import java.net.InetAddress;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.HashMap;
+import java.util.List;
 
 /**
  * Daedalus Project
@@ -21,12 +27,21 @@ import java.util.HashMap;
  */
 public class DNSServerHelper {
     private static HashMap<String, Integer> portCache = null;
+    public static HashMap<String, List<InetAddress>> domainCache = null;
 
-    public static void clearPortCache() {
+    public static void clearCache() {
         portCache = null;
+        domainCache = null;
     }
 
-    public static void buildPortCache() {
+    public static void buildCache() {
+        domainCache = new HashMap<>();
+        if (ProviderPicker.getDnsQueryMethod() >= ProviderPicker.DNS_QUERY_METHOD_HTTPS_IETF &&
+                !Daedalus.getPrefs().getBoolean("settings_dont_build_doh_cache", false)) {
+            buildDomainCache(getAddressById(getPrimary()));
+            buildDomainCache(getAddressById(getSecondary()));
+        }
+
         portCache = new HashMap<>();
         for (DNSServer server : Daedalus.DNS_SERVERS) {
             portCache.put(server.getAddress(), server.getPort());
@@ -35,7 +50,16 @@ public class DNSServerHelper {
         for (CustomDNSServer server : Daedalus.configurations.getCustomDNSServers()) {
             portCache.put(server.getAddress(), server.getPort());
         }
+    }
 
+    private static void buildDomainCache(String addr) {
+        addr = HttpsProvider.HTTPS_SUFFIX + addr;
+        String host = Uri.parse(addr).getHost();
+        try {
+            domainCache.put(host, Arrays.asList(InetAddress.getAllByName(host)));
+        } catch (Exception e) {
+            Logger.logException(e);
+        }
     }
 
     public static int getPortOrDefault(InetAddress address, int defaultPort) {
diff --git a/app/src/main/res/values-zh-rCN/strings.xml b/app/src/main/res/values-zh-rCN/strings.xml
index 6f2285e..05ee9a3 100644
--- a/app/src/main/res/values-zh-rCN/strings.xml
+++ b/app/src/main/res/values-zh-rCN/strings.xml
@@ -60,12 +60,11 @@
     <string name="settings_help_and_support">支持和帮助</string>
     <string name="settings_advanced">高级系统设置</string>
     <string name="settings_advanced_on">开启</string>
-    <string name="settings_local_rules_resolver">本地规则解析</string>
     <string name="settings_manual">使用手册</string>
     <string name="settings_manual_summary">访问 GitHub wiki 页面。</string>
     <string name="settings_log_size">日志大小限制</string>
     <string name="settings_debug_output">调试输出</string>
-    <string name="settings_allow_dynamic_rule_reload">允许动态更新规则</string>
+    <string name="settings_dont_build_doh_cache">不缓存 DoH DNS 的 IP地址</string>
     <string name="settings_dark_theme">使用暗主题</string>
     <string name="settings_dns_query_method">DNS 查询方式</string>
 
diff --git a/app/src/main/res/values-zh-rTW/strings.xml b/app/src/main/res/values-zh-rTW/strings.xml
index e9f9a0a..5aae473 100644
--- a/app/src/main/res/values-zh-rTW/strings.xml
+++ b/app/src/main/res/values-zh-rTW/strings.xml
@@ -60,12 +60,11 @@
     <string name="settings_help_and_support">支援與說明</string>
     <string name="settings_advanced">進階系統設定</string>
     <string name="settings_advanced_on">開啟</string>
-    <string name="settings_local_rules_resolver">本機規則解析</string>
     <string name="settings_manual">使用手冊</string>
     <string name="settings_manual_summary">造訪 GitHub wiki 頁面。</string>
     <string name="settings_log_size">紀錄檔大小限制</string>
     <string name="settings_debug_output">调试输出 TODO</string>
-    <string name="settings_allow_dynamic_rule_reload">允許動態規則重新載入</string>
+    <string name="settings_dont_build_doh_cache">不缓存 DoH DNS 的 IP地址</string>
     <string name="settings_dark_theme">使用暗主题</string>
 
     <string name="settings_rule_name">規則名稱</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index d32b179..d0cf25c 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -59,11 +59,10 @@
     <string name="settings_help_and_support">Help &amp; Support</string>
     <string name="settings_advanced">Advanced System Settings</string>
     <string name="settings_advanced_on">On</string>
-    <string name="settings_local_rules_resolver">Local Rules Resolver</string>
     <string name="settings_log_size">Log Size Limit</string>
     <string name="settings_manual">Manual</string>
     <string name="settings_manual_summary">Visit GitHub wiki page.</string>
-    <string name="settings_allow_dynamic_rule_reload">Allow Dynamic Rule Reloading</string>
+    <string name="settings_dont_build_doh_cache">Don\'t build DNS Cache for DoH DNS</string>
     <string name="settings_debug_output">Debug Output</string>
     <string name="settings_dark_theme">Use Dark Theme</string>
     <string name="settings_dns_query_method">DNS Query Method</string>
diff --git a/app/src/main/res/xml/perf_settings.xml b/app/src/main/res/xml/perf_settings.xml
index 0e2c78a..0a5f9cd 100644
--- a/app/src/main/res/xml/perf_settings.xml
+++ b/app/src/main/res/xml/perf_settings.xml
@@ -81,13 +81,8 @@
                 android:defaultValue="false"
                 android:enabled="false"/>
         <SwitchPreference
-                android:key="settings_local_rules_resolution"
-                android:title="@string/settings_local_rules_resolver"
-                android:defaultValue="false"
-                android:enabled="false"/>
-        <SwitchPreference
-                android:key="settings_allow_dynamic_rule_reload"
-                android:title="@string/settings_allow_dynamic_rule_reload"
+                android:key="settings_dont_build_doh_cache"
+                android:title="@string/settings_dont_build_doh_cache"
                 android:defaultValue="false"
                 android:enabled="false"/>
         <ListPreference
diff --git a/build.gradle b/build.gradle
index 8d99f1b..85e81ab 100644
--- a/build.gradle
+++ b/build.gradle
@@ -9,8 +9,8 @@ buildscript {
         }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.4.1'
-        classpath 'com.google.gms:google-services:4.2.0'
+        classpath 'com.android.tools.build:gradle:3.4.2'
+        classpath 'com.google.gms:google-services:4.3.0'
         classpath 'io.fabric.tools:gradle:1.28.1'
 
         // NOTE: Do not place your application dependencies here; they belong