diff --git a/build.gradle b/build.gradle
index 8adc4cf..c2be4c2 100644
--- a/build.gradle
+++ b/build.gradle
@@ -14,7 +14,8 @@ allprojects {
     repositories {
         google()
         jcenter()
-        maven { url 'https://jitpack.io' }
+        mavenCentral()
+        maven { url "https://jitpack.io" }
     }
     configurations.all {
         resolutionStrategy.force "com.android.support:support-v4:23.1.1"
diff --git a/cameraDemo/build.gradle b/cameraDemo/build.gradle
index 4ee2211..cd75d56 100644
--- a/cameraDemo/build.gradle
+++ b/cameraDemo/build.gradle
@@ -1,6 +1,7 @@
 buildscript {
     repositories {
         jcenter()
+        mavenCentral()
         google()
     }
     dependencies {
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 4ac8071..2b6aa7c 100755
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.0-all.zip