diff --git a/Cargo.toml b/Cargo.toml
index 28a33ae7c..1b2d21649 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -61,7 +61,7 @@ rand_distr = "0.3"
 quickcheck = "0.9"
 log = "0.4.14"
 env_logger = "0.9.0"
-zerocopy = "0.6.0"
+zerocopy = "0.7.21"
 byteorder = "1.4.3"
 
 [[test]]