diff --git a/madsim/Cargo.toml b/madsim/Cargo.toml
index b3e2daf..6567b67 100644
--- a/madsim/Cargo.toml
+++ b/madsim/Cargo.toml
@@ -32,8 +32,8 @@ tracing = "0.1"
 tracing-subscriber = "0.3"
 
 [target.'cfg(madsim)'.dependencies]
-ahash = "0.7"
-async-channel = "1.6"
+ahash = "0.8"
+async-channel = "2"
 async-stream = "0.3"
 async-task = "4.4"
 downcast-rs = "1.2"
@@ -43,7 +43,7 @@ panic-message = "0.3"
 rand_xoshiro = "0.6"
 rustversion = "1"
 tokio = { version = "1", features = ["rt", "sync"] }
-toml = "0.7"
+toml = "0.8"
 
 [target.'cfg(not(madsim))'.dependencies]
 async-ucx = { version = "0.1", features = ["event"], optional = true }
@@ -60,7 +60,7 @@ tokio-util = { version = "0.7", features = ["codec"] }
 # mad_rpc = { git = "https://github.com/madsys-dev/madrpc", rev = "2be4b02", optional = true }
 
 [dev-dependencies]
-criterion = "0.4"
+criterion = "0.5"
 structopt = "0.3"
 tokio = { version = "1", features = ["rt-multi-thread", "macros"] }
 
diff --git a/madsim/src/sim/config.rs b/madsim/src/sim/config.rs
index 509582f..89b20f4 100644
--- a/madsim/src/sim/config.rs
+++ b/madsim/src/sim/config.rs
@@ -25,7 +25,7 @@ pub struct Config {
 impl Config {
     /// Returns the hash value of this config.
     pub fn hash(&self) -> u64 {
-        let mut hasher = AHasher::new_with_keys(0, 0);
+        let mut hasher = AHasher::default();
         Hash::hash(self, &mut hasher);
         hasher.finish()
     }