diff --git a/lib/build.gradle b/lib/build.gradle
index ac1f63a..768dd5f 100644
--- a/lib/build.gradle
+++ b/lib/build.gradle
@@ -54,5 +54,5 @@ dependencies {
     testCompile 'org.robolectric:shadows-httpclient:3.2.2'
     testCompile 'org.assertj:assertj-core:3.6.2'
     testCompile 'org.powermock:powermock-api-mockito:1.6.6'
-    compile 'commons-io:commons-io:2.4'
+    testCompile 'commons-io:commons-io:2.4'
 }