diff --git a/Cargo.toml b/Cargo.toml
index 614c12c..1170db2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,4 +20,4 @@ std = []
 futures = "0.3"
 rustversion = "1.0"
 thiserror = "1.0"
-trybuild = "1.0"
+trybuild = { version = "1.0.19", features = ["diff"] }