diff --git a/core/codegen/Cargo.toml b/core/codegen/Cargo.toml
index 18327844..7d9f67c3 100644
--- a/core/codegen/Cargo.toml
+++ b/core/codegen/Cargo.toml
@@ -27,6 +27,6 @@ glob = "0.3"
 [dev-dependencies]
 rocket = { version = "0.5.0-rc.1", path = "../lib", features = ["json", "msgpack"] }
 time = { version =  "0.3", features = ["macros"] }
-pretty_assertions = "0.7"
+pretty_assertions = "1"
 version_check = "0.9"
 trybuild = "1.0"
diff --git a/core/lib/Cargo.toml b/core/lib/Cargo.toml
index 758fb4ea..100e822d 100644
--- a/core/lib/Cargo.toml
+++ b/core/lib/Cargo.toml
@@ -30,7 +30,7 @@ uuid = ["uuid_", "rocket_http/uuid"]
 [dependencies]
 # Serialization dependencies.
 serde_json = { version = "1.0.26", optional = true }
-rmp-serde = { version = "0.15.0", optional = true }
+rmp-serde = { version = "1", optional = true }
 uuid_ = { package = "uuid", version = "0.8", optional = true, features = ["serde"] }
 
 # Non-optional, core dependencies from here on out.
@@ -44,7 +44,7 @@ binascii = "0.1"
 atty = "0.2"
 ref-cast = "1.0"
 atomic = "0.5"
-parking_lot = "0.11"
+parking_lot = "0.12"
 ubyte = {version = "0.10", features = ["serde"] }
 serde = { version = "1.0", features = ["derive"] }
 figment = { version = "0.10.6", features = ["toml", "env"] }
@@ -73,7 +73,7 @@ version = "1.6.1"
 features = ["fs", "io-std", "io-util", "rt-multi-thread", "sync", "signal", "macros"]
 
 [dependencies.tokio-util]
-version = "0.6"
+version = "0.7"
 default-features = false
 features = ["io"]
 
@@ -86,4 +86,4 @@ version_check = "0.9.1"
 
 [dev-dependencies]
 figment = { version = "0.10", features = ["test"] }
-pretty_assertions = "0.7"
+pretty_assertions = "1"
diff --git a/examples/responders/Cargo.toml b/examples/responders/Cargo.toml
index 514974c9..4bcc40f4 100644
--- a/examples/responders/Cargo.toml
+++ b/examples/responders/Cargo.toml
@@ -7,4 +7,4 @@ publish = false
 
 [dependencies]
 rocket = { path = "../../core/lib" }
-parking_lot = "0.11"
+parking_lot = "0.12"
diff --git a/examples/todo/Cargo.toml b/examples/todo/Cargo.toml
index a6bc43a3..6e1c0e0a 100644
--- a/examples/todo/Cargo.toml
+++ b/examples/todo/Cargo.toml
@@ -11,7 +11,7 @@ diesel = { version = "1.3", features = ["sqlite", "r2d2"] }
 diesel_migrations = "1.3"
 
 [dev-dependencies]
-parking_lot = "0.11"
+parking_lot = "0.12"
 rand = "0.8"
 
 [dependencies.rocket_sync_db_pools]