diff --git a/Cargo.toml b/Cargo.toml
index b6b6511..97f2ece 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -18,7 +18,7 @@ futures-retry = "0.3.0"
 enum_primitive = "0.1.1"
 num = "0.2.0"
 log = "0.4.6"
-pretty_env_logger="0.3.0"
+pretty_env_logger="0.4.0"
 byteorder = "1.2.7"
 fnv = "1.0.6"
 rand = "0.6.5"