--- cssparser-0.23.2/Cargo.toml	1970-01-01T01:00:00+01:00
+++ cssparser-0.23.2/Cargo.toml	2018-01-24T16:33:34.633474+01:00
@@ -51,7 +51,7 @@
 [dependencies.smallvec]
 version = "0.6"
 [dev-dependencies.difference]
-version = "1.0"
+version = "2.0"
 
 [dev-dependencies.encoding_rs]
 version = "0.7"