diff --git a/Cargo.lock b/Cargo.lock
index 64c9918..67535db 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -693,9 +693,9 @@ checksum = "a3e378b66a060d48947b590737b30a1be76706c8dd7b8ba0f2fe3989c68a853f"
 
 [[package]]
 name = "mio"
-version = "0.7.14"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8067b404fe97c70829f082dec8bcf4f71225d7eaea1d8645349cb76fa06205cc"
+checksum = "ba272f85fa0b41fc91872be579b3bbe0f56b792aa361a380eb669469f68dafb2"
 dependencies = [
  "libc",
  "log",
diff --git a/Cargo.toml b/Cargo.toml
index 3f85e13..2110df4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -37,7 +37,7 @@ rand = { version = "0.8.4", package = "rand" }
 rand-old = { package = "rand", version = "0.7.0" } # For ed25519-dalek
 sqlite = "0.26.0"
 uuid = { version = "0.8.2", features = ["serde", "v4"] }
-mio = { version = "0.7.14", features = ["os-poll", "net"] }
+mio = { version = "0.8.0", features = ["os-poll", "net"] }
 ureq = { version = "2.2", optional = true }
 lru = "0.7"
 derive_more = "0.99.16"