diff --git a/app/build.gradle b/app/build.gradle
index 3c01216..7af48a8 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -4,12 +4,12 @@ apply plugin: 'com.google.gms.google-services'
 def gitCommit = 'git rev-parse --short HEAD'.execute([], project.rootDir).text.trim()
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion "25.0.3"
+    compileSdkVersion 26
+    buildToolsVersion "26.0.1"
     defaultConfig {
         applicationId "org.itxtech.daedalus"
         minSdkVersion 15
-        targetSdkVersion 25
+        targetSdkVersion 26
         versionCode 12
         versionName "1.10.1"
 
@@ -42,17 +42,18 @@ android {
 
 dependencies {
     compile fileTree(include: ['*.jar'], dir: 'libs')
-    compile 'com.android.support:appcompat-v7:25.3.1'
-    compile 'com.android.support:design:25.3.1'
-    compile 'com.android.support:support-v4:25.3.1'
-    compile 'com.android.support:percent:25.3.1'
-    compile 'com.android.support:cardview-v7:25.3.1'
+    compile 'com.android.support:appcompat-v7:26.0.2'
+    compile 'com.android.support:design:26.0.2'
+    compile 'com.android.support:support-v4:26.0.2'
+    compile 'com.android.support:percent:26.0.2'
+    compile 'com.android.support:cardview-v7:26.0.2'
 
     compile 'org.pcap4j:pcap4j-core:1.7.1'
     compile 'org.pcap4j:pcap4j-packetfactory-static:1.7.1'
     compile 'de.measite.minidns:minidns-core:0.2.2'
     compile 'com.google.code.gson:gson:2.8.1'
 
+    compile 'com.google.firebase:firebase-core:11.0.4'
     compile 'com.google.firebase:firebase-crash:11.0.4'
 
     testCompile 'junit:junit:4.12'
diff --git a/app/src/main/java/org/itxtech/daedalus/Daedalus.java b/app/src/main/java/org/itxtech/daedalus/Daedalus.java
index f5703cc..6a9ea19 100644
--- a/app/src/main/java/org/itxtech/daedalus/Daedalus.java
+++ b/app/src/main/java/org/itxtech/daedalus/Daedalus.java
@@ -114,7 +114,7 @@ public class Daedalus extends Application {
         initData();
     }
 
-    private void initDirectory(String dir){
+    private void initDirectory(String dir) {
         File directory = new File(dir);
         if (!directory.isDirectory()) {
             Logger.warning(dir + " is not a directory. Delete result: " + String.valueOf(directory.delete()));
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 6f3c991..72078db 100644
--- a/app/src/main/java/org/itxtech/daedalus/fragment/RulesFragment.java
+++ b/app/src/main/java/org/itxtech/daedalus/fragment/RulesFragment.java
@@ -125,8 +125,7 @@ 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)
-                        .setAction("Action", null).show();
+                Snackbar.make(getView(), R.string.notice_check_dynamic_rule_reload, Snackbar.LENGTH_SHORT).show();
             } else {
                 Daedalus.setRulesChanged();
             }
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 6f4c156..25cd8b6 100644
--- a/app/src/main/java/org/itxtech/daedalus/util/Configurations.java
+++ b/app/src/main/java/org/itxtech/daedalus/util/Configurations.java
@@ -136,6 +136,10 @@ public class Configurations {
         return config;
     }
 
+    public Configurations() {
+        //TODO: Initial config. Eg. Build-in rules
+    }
+
     public void save() {
         try {
             if (file != null) {
diff --git a/build.gradle b/build.gradle
index faf1d38..0cf1e4a 100644
--- a/build.gradle
+++ b/build.gradle
@@ -16,6 +16,9 @@ buildscript {
 allprojects {
     repositories {
         jcenter()
+        maven {
+            url 'https://maven.google.com'
+        }
     }
 }