diff --git a/app/build.gradle b/app/build.gradle
index d72191717..7390a9974 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -135,10 +135,6 @@ android {
     }
 }
 
-ext {
-    work_version = '2.4.0'
-}
-
 dependencies {
     implementation 'androidx.appcompat:appcompat:1.1.0'
     implementation 'androidx.preference:preference:1.1.1'
@@ -149,7 +145,7 @@ dependencies {
     implementation 'androidx.vectordrawable:vectordrawable:1.1.0'
     implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
     implementation 'androidx.palette:palette:1.0.0'
-    implementation "androidx.work:work-runtime:$work_version"
+    implementation 'androidx.work:work-runtime:2.4.0'
 
     implementation 'com.google.android.material:material:1.1.0'
 
@@ -189,7 +185,7 @@ dependencies {
     androidTestImplementation 'androidx.test.ext:junit:1.1.2'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
     androidTestImplementation 'androidx.test.uiautomator:uiautomator:2.2.0'
-    androidTestImplementation "androidx.work:work-testing:$work_version"
+    androidTestImplementation 'androidx.work:work-testing:2.4.0'
 }
 
 checkstyle {