diff --git a/Cargo.toml b/Cargo.toml
index abc30fa..c01cf90 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,4 +12,4 @@ license = "MIT"
 edition = "2018"
 
 [dev-dependencies]
-proptest = "0.10.0"
+proptest = "1"