diff --git a/Cargo.toml b/Cargo.toml
index 8b2c3d0..3df67c6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -24,7 +24,7 @@ tempfile = { version = "3.0", optional = true }
 serde = "1.0"
 serde_json = "1.0"
 serde_derive = "1.0"
-rustfix = "0.5"
+rustfix = "0.6"
 tester = "0.9"
 lazy_static = "1.4"