diff --git a/Cargo.toml b/Cargo.toml
index 8f5e3e7..1e0187a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,7 +8,7 @@ edition = "2018"
 
 
 [dev-dependencies]
-proptest = "0.10"
+proptest = "1.0"
 criterion = "0.3"
 mimalloc = "0.1"
 core_affinity = "*"