diff --git a/tests/testutils/Cargo.toml b/tests/testutils/Cargo.toml
index 9003822eee..806c3de52d 100644
--- a/tests/testutils/Cargo.toml
+++ b/tests/testutils/Cargo.toml
@@ -5,4 +5,4 @@ authors = ["Aleksey Kladov <aleksey.kladov@gmail.com>"]
 
 [dependencies]
 file = "1.0"
-difference = "1.0.0"
+difference = "2.0.0"