diff --git a/test_suite/Cargo.toml b/test_suite/Cargo.toml
index acf40e79..0decbdaa 100644
--- a/test_suite/Cargo.toml
+++ b/test_suite/Cargo.toml
@@ -19,4 +19,4 @@ serde = { path = "../serde", features = ["rc", "derive"] }
 serde_derive = { path = "../serde_derive", features = ["deserialize_in_place"] }
 serde_test = { path = "../serde_test" }
 trybuild = "1.0"
-macrotest = "0.1"
+macrotest = "=1.0.0"