diff --git a/tonic-build/Cargo.toml b/tonic-build/Cargo.toml
index c40a6ba..7c70f44 100644
--- a/tonic-build/Cargo.toml
+++ b/tonic-build/Cargo.toml
@@ -4,8 +4,6 @@ version = "0.1.0"
 authors = ["Lucio Franco <luciofranco14@gmail.com>"]
 edition = "2018"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
 [dependencies]
 prost-build = "0.5"
 syn = "1.0"
diff --git a/tonic-examples/Cargo.toml b/tonic-examples/Cargo.toml
index 28295f5..24f08ae 100644
--- a/tonic-examples/Cargo.toml
+++ b/tonic-examples/Cargo.toml
@@ -50,11 +50,11 @@ bytes = "0.4"
 prost = "0.5"
 prost-derive = "0.5"
 
-tokio = "=0.2.0-alpha.4"
-futures-preview = { version = "=0.3.0-alpha.18", default-features = false, features = ["alloc"]}
-async-stream = "0.1.1"
+tokio = "=0.2.0-alpha.6"
+futures-preview = { version = "=0.3.0-alpha.19", default-features = false, features = ["alloc"]}
+async-stream = "0.1.2"
 http = "0.1"
-tower = "0.3.0-alpha.1a"
+tower = "0.3.0-alpha.2"
 
 # Required for routeguide
 serde = { version = "1.0", features = ["derive"] }
diff --git a/tonic-examples/src/routeguide/server.rs b/tonic-examples/src/routeguide/server.rs
index 164ca68..b7a0c30 100644
--- a/tonic-examples/src/routeguide/server.rs
+++ b/tonic-examples/src/routeguide/server.rs
@@ -6,7 +6,7 @@ use std::hash::{Hash, Hasher};
 use std::pin::Pin;
 use std::sync::Arc;
 use std::time::Instant;
-use tokio::sync::{mpsc, Lock};
+use tokio::sync::{mpsc, Mutex};
 use tonic::transport::Server;
 use tonic::{Request, Response, Status};
 
@@ -24,7 +24,7 @@ pub struct RouteGuide {
 #[derive(Debug, Clone)]
 struct State {
     features: Arc<Vec<Feature>>,
-    notes: Lock<HashMap<Point, Vec<RouteNote>>>,
+    notes: Arc<Mutex<HashMap<Point, Vec<RouteNote>>>>,
 }
 
 #[tonic::async_trait]
@@ -161,7 +161,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
         state: State {
             // Load data file
             features: Arc::new(data::load()),
-            notes: Lock::new(HashMap::new()),
+            notes: Arc::new(Mutex::new(HashMap::new())),
         },
     };
 
diff --git a/tonic-interop/Cargo.toml b/tonic-interop/Cargo.toml
index ead37ed..410f368 100644
--- a/tonic-interop/Cargo.toml
+++ b/tonic-interop/Cargo.toml
@@ -13,17 +13,17 @@ name = "server"
 path = "src/bin/server.rs"
 
 [dependencies]
-tokio = "=0.2.0-alpha.4"
+tokio = "=0.2.0-alpha.6"
 tonic = { path = "../tonic", features = ["openssl"] }
 prost = "0.5"
 prost-derive = "0.5"
 bytes = "0.4"
 http = "0.1"
-futures-core-preview = "=0.3.0-alpha.18"
-futures-util-preview = "=0.3.0-alpha.18"
-async-stream = "0.1.1"
-tower = "0.3.0-alpha.1a"
-http-body = "0.2.0-alpha.1"
+futures-core-preview = "=0.3.0-alpha.19"
+futures-util-preview = "=0.3.0-alpha.19"
+async-stream = "0.1.2"
+tower = "0.3.0-alpha.2"
+http-body = "0.2.0-alpha.2"
 
 console = "0.7"
 structopt = "0.2"
diff --git a/tonic/Cargo.toml b/tonic/Cargo.toml
index 47e725a..117b53e 100644
--- a/tonic/Cargo.toml
+++ b/tonic/Cargo.toml
@@ -39,18 +39,18 @@ tls = []
 
 [dependencies]
 bytes = "0.4"
-futures-core-preview = "=0.3.0-alpha.18"
-futures-util-preview = "=0.3.0-alpha.18"
+futures-core-preview = "=0.3.0-alpha.19"
+futures-util-preview = "=0.3.0-alpha.19"
 tracing = "0.1"
 http = "0.1.14"
 base64 = "0.10"
 
 percent-encoding = "1.0.1"
-tower-service = "=0.3.0-alpha.1"
-tokio-codec = "=0.2.0-alpha.4"
-async-stream = "0.1.1"
-http-body = "0.2.0-alpha.1"
-pin-project = "=0.4.0-alpha.11"
+tower-service = "=0.3.0-alpha.2"
+tokio-codec = "=0.2.0-alpha.6"
+async-stream = "0.1.2"
+http-body = "0.2.0-alpha.3"
+pin-project = "^0.4"
 
 # prost
 prost = { version = "0.5", optional = true }
@@ -60,17 +60,17 @@ prost-derive = { version = "0.5", optional = true }
 async-trait = { version = "0.1.13", optional = true }
 
 # transport
-hyper = { git = "https://github.com/hyperium/hyper", features = ["unstable-stream"], optional = true, rev = "2b0405c48c10bca7893c30ea960ac20a41a8578f" }
-tokio = { version = "=0.2.0-alpha.4", default-features = false, features = ["tcp"], optional = true }
-tower = { version = "=0.3.0-alpha.1a", optional = true}
-tower-make = "=0.1.0-alpha.2"
-tower-reconnect = { version = "=0.3.0-alpha.1", optional = true }
-tower-balance =  { version = "=0.3.0-alpha.1", optional = true }
-tower-load = { version = "=0.3.0-alpha.1", optional = true }
+hyper = { version = "0.13.0-alpha.3", features = ["unstable-stream"], optional = true }
+tokio = { version = "=0.2.0-alpha.6", default-features = false, features = ["tcp"], optional = true }
+tower = { version = "=0.3.0-alpha.2", optional = true}
+tower-make = "=0.3.0-alpha.2a"
+tower-reconnect = { version = "=0.3.0-alpha.2", optional = true }
+tower-balance =  { version = "=0.3.0-alpha.2", optional = true }
+tower-load = { version = "=0.3.0-alpha.2", optional = true }
 
 # openssl
-tokio-openssl = { version = "=0.4.0-alpha.4", optional = true }
+tokio-openssl = { version = "=0.4.0-alpha.6", optional = true }
 openssl1 = { package = "openssl", version = "0.10", optional = true }
 
 # rustls
-tokio-rustls = { version = "0.12.0-alpha.2", optional = true }
+tokio-rustls = { version = "0.12.0-alpha.4", optional = true }