diff --git a/app/build.gradle b/app/build.gradle
index 98ccdf62..f2d29aa9 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -18,6 +18,6 @@ android {
 }
 
 dependencies {
-    implementation "androidx.legacy:legacy-support-v4:$supportLib"
+    implementation "androidx.legacy:legacy-support-v4:1.0.0"
     implementation project(':touchview')
 }
diff --git a/build.gradle b/build.gradle
index fce170e0..a9db44bc 100644
--- a/build.gradle
+++ b/build.gradle
@@ -12,7 +12,6 @@ buildscript {
 ext {
     defaultTargetSdkVersion = 28
     defaultCompileSdkVersion = 28
-    supportLib = "1.0.0"
 }
 
 allprojects {