diff --git a/app/build.gradle b/app/build.gradle
index 5eb5956..60e4d69 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -125,7 +125,6 @@ dependencies {
     def testRunnerVersion = "1.5.2"
     def testRulesVersion = "1.5.0"
 //    def nav_version = "2.4.1"
-    implementation 'com.github.mik3y:usb-serial-for-android:3.9.0'
     implementation 'com.android.support:multidex:1.0.3'
 
     // QR