diff --git a/Cargo.toml b/Cargo.toml
index 92c6b24..94e4655 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,7 +21,7 @@ members = [
 log        = "0.4"
 env_logger = { version = "0.6", default-features = false, features = [ "termcolor", "atty", "humantime" ] }
 clap       = "2.33"
-mio        = { version = "0.6", default-features = false }
+mio        = { version = "0.7", default-features = false }
 ctrlc      = { version = "3.1", features = ["termination"] }
 smoltcp    = { version = "0.5", default-features = false, features = [ "std", "log", "proto-ipv4", "proto-ipv6" ] }
 
diff --git a/crates/tun/Cargo.toml b/crates/tun/Cargo.toml
index 25cd8fb..9e065ca 100644
--- a/crates/tun/Cargo.toml
+++ b/crates/tun/Cargo.toml
@@ -10,7 +10,7 @@ keywords    = ["tun", "network", "tunnel", "bindings"]
 [dependencies]
 libc      = "0.2"
 ioctl-sys = "0.5"
-mio       = { version = "0.6", optional = true }
+mio       = { version = "0.7", optional = true }
 
 [features]
 default = [ ]