diff --git a/entity_reference_revisions.info.yml b/entity_reference_revisions.info.yml
index d39378d..b5a4763 100644
--- a/entity_reference_revisions.info.yml
+++ b/entity_reference_revisions.info.yml
@@ -3,3 +3,6 @@ type: module
 description: Adds a Entity Reference field type with revision support.
 core: 8.x
 package: Field types
+
+test_dependencies:
+  - diff