diff --git a/app/build.gradle b/app/build.gradle
index 767da27..79d7c14 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -27,4 +27,7 @@ dependencies {
     compile 'com.android.support:appcompat-v7:25.3.1'
     compile 'com.android.support:design:25.3.1'
     testCompile 'junit:junit:4.12'
+
+    //External libs
+    compile 'com.davemorrissey.labs:subsampling-scale-image-view:3.6.0'
 }