diff --git a/Cargo.toml b/Cargo.toml
index 6047243..e3dd091 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,9 +13,9 @@
 readme = "README.md"
 
 [dependencies]
-crossbeam-utils = "0.6.5"
+crossbeam-utils = "0.7.0"
 
 [dev-dependencies]
-crossbeam = "0.7.1"
-futures-preview = "0.3.0-alpha.17"
-lazy_static = "1.3.0"
+crossbeam = "0.7.3"
+futures = "0.3.1"
+lazy_static = "1.4.0"