diff --git a/Cargo.toml b/Cargo.toml
index 044e8a65..bbe7697a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,7 +21,7 @@ rustdoc-args = ["--cfg=doc_cfg"]
 futures-core = { version = "0.3.28", default-features = false }
 futures-sink = { version = "0.3.28", default-features = false }
 futures-util = { version = "0.3.28", default-features = false, features = ["sink"] }
-tokio = { version = "1.28.2", features = ["sync"], optional = true }
+tokio = { version = "1.40.0", features = ["sync"], optional = true }
 futures = { version = "0.3.28", optional = true }
 pin-project-lite = "0.2.9"
 
@@ -31,7 +31,7 @@ async-stream = "0.3.5"
 bytes = "1.4.0"
 debug-ignore = "1.0.5"
 tempfile = "3.6.0"
-tokio = { version = "1.28.2", features = ["fs", "io-util", "macros", "rt", "rt-multi-thread", "sync", "time"] }
+tokio = { version = "1.40.0", features = ["fs", "io-util", "macros", "rt", "rt-multi-thread", "sync", "time"] }
 tokio-test = "0.4.0"
 
 [features]