diff --git a/MqttLibrary/build.gradle b/MqttLibrary/build.gradle
index 2daec72..84c53bf 100644
--- a/MqttLibrary/build.gradle
+++ b/MqttLibrary/build.gradle
@@ -60,8 +60,8 @@ ext {
 
 dependencies {
 
-    implementation 'androidx.appcompat:appcompat:1.4.2'
-    implementation 'com.google.android.material:material:1.6.1'
+    implementation 'androidx.appcompat:appcompat:1.3.0'
+    implementation 'com.google.android.material:material:1.4.0'
     compileOnly 'com.google.android.things:androidthings:1.0'
 
     implementation 'com.hivemq:hivemq-mqtt-client:1.2.2'