diff --git a/Cargo.toml b/Cargo.toml
index 4177524..ffe9ca6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,7 +19,7 @@ futures-io = "0.3"
 [dev-dependencies]
 criterion = "0.3"
 futures = "0.3"
-quickcheck = "0.9"
+quickcheck = "1.0"
 quickcheck_macros = "0.9"
 
 [[bench]]