diff --git a/app/build.gradle b/app/build.gradle
index d8dac6b63..2fab1731b 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -124,7 +124,7 @@ dependencies {
     implementation 'com.github.ByteHamster:SearchPreference:v2.0.0'
     implementation 'com.github.skydoves:balloon:1.4.0'
     implementation 'com.github.xabaras:RecyclerViewSwipeDecorator:1.3'
-    implementation 'com.annimon:stream:1.2.2'
+    implementation "com.annimon:stream:$annimonStreamVersion"
 
     // Non-free dependencies:
     playImplementation 'com.google.android.play:core:1.8.0'
diff --git a/build.gradle b/build.gradle
index 1a16e1dac..925a50fb7 100644
--- a/build.gradle
+++ b/build.gradle
@@ -44,6 +44,7 @@ project.ext {
     rxAndroidVersion = "2.1.1"
     rxJavaVersion = "2.2.2"
     iconifyVersion = "2.2.2"
+    annimonStreamVersion = "1.2.2"
     exoPlayerVersion = "2.14.2"
 
     // Google Play build
diff --git a/core/build.gradle b/core/build.gradle
index 526589230..a44f67c61 100644
--- a/core/build.gradle
+++ b/core/build.gradle
@@ -62,7 +62,7 @@ dependencies {
     annotationProcessor "org.greenrobot:eventbus-annotation-processor:$eventbusVersion"
     implementation "io.reactivex.rxjava2:rxandroid:$rxAndroidVersion"
     implementation "io.reactivex.rxjava2:rxjava:$rxJavaVersion"
-    implementation 'com.annimon:stream:1.2.2'
+    implementation "com.annimon:stream:$annimonStreamVersion"
 
     implementation "com.google.android.exoplayer:exoplayer-core:$exoPlayerVersion"
     implementation "com.google.android.exoplayer:exoplayer-ui:$exoPlayerVersion"