diff --git a/Cargo.toml b/Cargo.toml
index 29707d7..c661118 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,7 +20,7 @@ net2  = { version = "0.2.2", features = ["nightly"] }
 parse = { path = "components/parse" }
 redis = { version = "0.15.1"}
 rand  = { version = "0.7" }
-tokio = { version = "0.2.18", features = ["full"] }
+tokio = { version = "1.7.0", features = ["full"] }
 tokio-util = { version = "0.2.0", features = ["full"] }
 tonic = "0.2"
 clap  = { version = "~2.33.0" } # command line argument parse
diff --git a/components/epaxos/Cargo.toml b/components/epaxos/Cargo.toml
index 435b77e..67f41c9 100644
--- a/components/epaxos/Cargo.toml
+++ b/components/epaxos/Cargo.toml
@@ -23,7 +23,7 @@ maplit = { version = "1.0.2" }
 tempfile = { version = "3.1.0" }
 prost = { version = "0.6.1" }
 tonic = "0.2"
-tokio = { version = "0.2.18", features = ["full"] }
+tokio = { version = "1.7.0", features = ["full"] }
 derive_more = "0.99.3"
 num = "0.2.1"
 serde = { version = "1.0", features = ["derive"] }