diff --git a/benchmarks/Cargo.toml b/benchmarks/Cargo.toml
index 68bc82d2..fb97a0fc 100644
--- a/benchmarks/Cargo.toml
+++ b/benchmarks/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "rocket-benchmarks"
 version = "0.0.0"
-edition = "2018"
+edition = "2021"
 publish = false
 
 [workspace]
diff --git a/contrib/db_pools/codegen/Cargo.toml b/contrib/db_pools/codegen/Cargo.toml
index 770388c7..cdae7fce 100644
--- a/contrib/db_pools/codegen/Cargo.toml
+++ b/contrib/db_pools/codegen/Cargo.toml
@@ -7,7 +7,8 @@ repository = "https://github.com/SergioBenitez/Rocket/contrib/db_pools"
 readme = "../README.md"
 keywords = ["rocket", "framework", "database", "pools"]
 license = "MIT OR Apache-2.0"
-edition = "2018"
+edition = "2021"
+rust-version = "1.56"
 
 [lib]
 proc-macro = true
diff --git a/contrib/db_pools/lib/Cargo.toml b/contrib/db_pools/lib/Cargo.toml
index ecad3c7e..8767824b 100644
--- a/contrib/db_pools/lib/Cargo.toml
+++ b/contrib/db_pools/lib/Cargo.toml
@@ -7,7 +7,8 @@ repository = "https://github.com/SergioBenitez/Rocket/contrib/db_pools"
 readme = "../README.md"
 keywords = ["rocket", "framework", "database", "pools"]
 license = "MIT OR Apache-2.0"
-edition = "2018"
+edition = "2021"
+rust-version = "1.56"
 
 [package.metadata.docs.rs]
 all-features = true
diff --git a/contrib/dyn_templates/Cargo.toml b/contrib/dyn_templates/Cargo.toml
index d6dd21f8..8bf15c9d 100644
--- a/contrib/dyn_templates/Cargo.toml
+++ b/contrib/dyn_templates/Cargo.toml
@@ -9,7 +9,8 @@ repository = "https://github.com/SergioBenitez/Rocket/tree/master/contrib/dyn_te
 readme = "README.md"
 keywords = ["rocket", "framework", "templates", "templating", "engine"]
 license = "MIT OR Apache-2.0"
-edition = "2018"
+edition = "2021"
+rust-version = "1.56"
 
 [features]
 tera = ["tera_"]
diff --git a/contrib/sync_db_pools/codegen/Cargo.toml b/contrib/sync_db_pools/codegen/Cargo.toml
index 86b794dd..a7bd2388 100644
--- a/contrib/sync_db_pools/codegen/Cargo.toml
+++ b/contrib/sync_db_pools/codegen/Cargo.toml
@@ -7,7 +7,8 @@ repository = "https://github.com/SergioBenitez/Rocket/contrib/sync_db_pools"
 readme = "../README.md"
 keywords = ["rocket", "framework", "database", "pools"]
 license = "MIT OR Apache-2.0"
-edition = "2018"
+edition = "2021"
+rust-version = "1.56"
 
 [lib]
 proc-macro = true
diff --git a/contrib/sync_db_pools/lib/Cargo.toml b/contrib/sync_db_pools/lib/Cargo.toml
index 73c4d3d1..0d37acfc 100644
--- a/contrib/sync_db_pools/lib/Cargo.toml
+++ b/contrib/sync_db_pools/lib/Cargo.toml
@@ -7,7 +7,8 @@ repository = "https://github.com/SergioBenitez/Rocket/tree/v0.5-rc/contrib/sync_
 readme = "../README.md"
 keywords = ["rocket", "framework", "database", "pools"]
 license = "MIT OR Apache-2.0"
-edition = "2018"
+edition = "2021"
+rust-version = "1.56"
 
 [features]
 diesel_sqlite_pool = ["diesel/sqlite", "diesel/r2d2"]
diff --git a/contrib/sync_db_pools/lib/src/poolable.rs b/contrib/sync_db_pools/lib/src/poolable.rs
index 9ba895f0..4e7a34c1 100644
--- a/contrib/sync_db_pools/lib/src/poolable.rs
+++ b/contrib/sync_db_pools/lib/src/poolable.rs
@@ -60,7 +60,7 @@ use crate::{Config, Error};
 /// #     impl self::r2d2::ManageConnection for ConnectionManager {
 /// #          type Connection = Connection;
 /// #          type Error = Error;
-/// #          fn connect(&self) -> Result<Connection> { panic!(()) }
+/// #          fn connect(&self) -> Result<Connection> { panic!() }
 /// #          fn is_valid(&self, _: &mut Connection) -> Result<()> { panic!() }
 /// #          fn has_broken(&self, _: &mut Connection) -> bool { panic!() }
 /// #     }
diff --git a/core/codegen/Cargo.toml b/core/codegen/Cargo.toml
index 7d9f67c3..d7deacd8 100644
--- a/core/codegen/Cargo.toml
+++ b/core/codegen/Cargo.toml
@@ -9,7 +9,8 @@ repository = "https://github.com/SergioBenitez/Rocket"
 readme = "../../README.md"
 keywords = ["rocket", "web", "framework", "code", "generation"]
 license = "MIT OR Apache-2.0"
-edition = "2018"
+edition = "2021"
+rust-version = "1.56"
 
 [lib]
 proc-macro = true
diff --git a/core/http/Cargo.toml b/core/http/Cargo.toml
index 01dbe513..c021f6f3 100644
--- a/core/http/Cargo.toml
+++ b/core/http/Cargo.toml
@@ -12,7 +12,8 @@ readme = "../../README.md"
 keywords = ["rocket", "web", "framework", "http"]
 license = "MIT OR Apache-2.0"
 categories = ["web-programming"]
-edition = "2018"
+edition = "2021"
+rust-version = "1.56"
 
 [features]
 default = []
diff --git a/core/lib/Cargo.toml b/core/lib/Cargo.toml
index 6deb9445..10f0d8bb 100644
--- a/core/lib/Cargo.toml
+++ b/core/lib/Cargo.toml
@@ -13,7 +13,8 @@ keywords = ["rocket", "web", "framework", "server"]
 license = "MIT OR Apache-2.0"
 build = "build.rs"
 categories = ["web-programming::http-server"]
-edition = "2018"
+edition = "2021"
+rust-version = "1.56"
 
 [package.metadata.docs.rs]
 all-features = true
@@ -82,7 +83,6 @@ features = ["io"]
 version = "1.0"
 
 [build-dependencies]
-yansi = "0.5"
 version_check = "0.9.1"
 
 [dev-dependencies]
diff --git a/core/lib/build.rs b/core/lib/build.rs
index dd11943b..99369685 100644
--- a/core/lib/build.rs
+++ b/core/lib/build.rs
@@ -1,23 +1,4 @@
-//! Ensures Rocket isn't compiled with an incompatible version of Rust.
-
-use yansi::{Paint, Color::{Red, Yellow}};
-
 fn main() {
-    const MIN_VERSION: &str = "1.46.0";
-
-    if let Some(version) = version_check::Version::read() {
-        if !version.at_least(MIN_VERSION) {
-            let msg = "Rocket requires a more recent version of rustc.";
-            eprintln!("{} {}", Red.paint("Error:").bold(), Paint::new(msg).bold());
-            eprintln!("Installed version: {}", Yellow.paint(version));
-            eprintln!("Minimum required:  {}", Yellow.paint(MIN_VERSION));
-            panic!("Aborting compilation due to incompatible compiler.")
-        }
-    } else {
-        println!("cargo:warning=Rocket was unable to check rustc compiler compatibility.");
-        println!("cargo:warning=Build may fail due to incompatible rustc version.");
-    }
-
     if let Some(true) = version_check::is_feature_flaggable() {
         println!("cargo:rustc-cfg=nightly");
     }
diff --git a/core/lib/fuzz/Cargo.toml b/core/lib/fuzz/Cargo.toml
index a8334caa..5e12bea4 100644
--- a/core/lib/fuzz/Cargo.toml
+++ b/core/lib/fuzz/Cargo.toml
@@ -4,7 +4,7 @@ name = "rocket-fuzz"
 version = "0.0.0"
 authors = ["Automatically generated"]
 publish = false
-edition = "2018"
+edition = "2021"
 
 [package.metadata]
 cargo-fuzz = true
diff --git a/examples/chat/Cargo.toml b/examples/chat/Cargo.toml
index 1397141c..24b9768b 100644
--- a/examples/chat/Cargo.toml
+++ b/examples/chat/Cargo.toml
@@ -2,7 +2,7 @@
 name = "chat"
 version = "0.0.0"
 workspace = "../"
-edition = "2018"
+edition = "2021"
 publish = false
 
 [dependencies]
diff --git a/examples/config/Cargo.toml b/examples/config/Cargo.toml
index 20e6ad1b..26ea10d3 100644
--- a/examples/config/Cargo.toml
+++ b/examples/config/Cargo.toml
@@ -2,7 +2,7 @@
 name = "config"
 version = "0.0.0"
 workspace = "../"
-edition = "2018"
+edition = "2021"
 publish = false
 
 [dependencies]
diff --git a/examples/cookies/Cargo.toml b/examples/cookies/Cargo.toml
index 847a0686..a0e1013c 100644
--- a/examples/cookies/Cargo.toml
+++ b/examples/cookies/Cargo.toml
@@ -2,7 +2,7 @@
 name = "cookies"
 version = "0.0.0"
 workspace = "../"
-edition = "2018"
+edition = "2021"
 publish = false
 
 [dependencies]
diff --git a/examples/databases/Cargo.toml b/examples/databases/Cargo.toml
index 1556db32..67810761 100644
--- a/examples/databases/Cargo.toml
+++ b/examples/databases/Cargo.toml
@@ -2,7 +2,7 @@
 name = "databases"
 version = "0.0.0"
 workspace = "../"
-edition = "2018"
+edition = "2021"
 publish = false
 
 [dependencies]
diff --git a/examples/error-handling/Cargo.toml b/examples/error-handling/Cargo.toml
index 6075b1f0..c19138a7 100644
--- a/examples/error-handling/Cargo.toml
+++ b/examples/error-handling/Cargo.toml
@@ -2,7 +2,7 @@
 name = "error-handling"
 version = "0.0.0"
 workspace = "../"
-edition = "2018"
+edition = "2021"
 publish = false
 
 [dependencies]
diff --git a/examples/fairings/Cargo.toml b/examples/fairings/Cargo.toml
index 93e939a7..5180b73b 100644
--- a/examples/fairings/Cargo.toml
+++ b/examples/fairings/Cargo.toml
@@ -2,7 +2,7 @@
 name = "fairings"
 version = "0.0.0"
 workspace = "../"
-edition = "2018"
+edition = "2021"
 publish = false
 
 [dependencies]
diff --git a/examples/forms/Cargo.toml b/examples/forms/Cargo.toml
index 6f431e91..68b7ea37 100644
--- a/examples/forms/Cargo.toml
+++ b/examples/forms/Cargo.toml
@@ -2,7 +2,7 @@
 name = "forms"
 version = "0.0.0"
 workspace = "../"
-edition = "2018"
+edition = "2021"
 publish = false
 
 [dependencies]
diff --git a/examples/hello/Cargo.toml b/examples/hello/Cargo.toml
index 9d2442a4..4546b8c8 100644
--- a/examples/hello/Cargo.toml
+++ b/examples/hello/Cargo.toml
@@ -2,7 +2,7 @@
 name = "hello"
 version = "0.0.0"
 workspace = "../"
-edition = "2018"
+edition = "2021"
 publish = false
 
 [dependencies]
diff --git a/examples/manual-routing/Cargo.toml b/examples/manual-routing/Cargo.toml
index fef9e587..271ff9f3 100644
--- a/examples/manual-routing/Cargo.toml
+++ b/examples/manual-routing/Cargo.toml
@@ -2,7 +2,7 @@
 name = "manual_routes"
 version = "0.0.0"
 workspace = "../"
-edition = "2018"
+edition = "2021"
 publish = false
 
 [dependencies]
diff --git a/examples/pastebin/Cargo.toml b/examples/pastebin/Cargo.toml
index b567b25e..382bc409 100644
--- a/examples/pastebin/Cargo.toml
+++ b/examples/pastebin/Cargo.toml
@@ -2,7 +2,7 @@
 name = "pastebin"
 version = "0.0.0"
 workspace = "../"
-edition = "2018"
+edition = "2021"
 publish = false
 
 [dependencies]
diff --git a/examples/responders/Cargo.toml b/examples/responders/Cargo.toml
index 4bcc40f4..5edb74ec 100644
--- a/examples/responders/Cargo.toml
+++ b/examples/responders/Cargo.toml
@@ -2,7 +2,7 @@
 name = "responders"
 version = "0.0.0"
 workspace = "../"
-edition = "2018"
+edition = "2021"
 publish = false
 
 [dependencies]
diff --git a/examples/serialization/Cargo.toml b/examples/serialization/Cargo.toml
index 1175b332..b53b924f 100644
--- a/examples/serialization/Cargo.toml
+++ b/examples/serialization/Cargo.toml
@@ -2,7 +2,7 @@
 name = "serialization"
 version = "0.0.0"
 workspace = "../"
-edition = "2018"
+edition = "2021"
 publish = false
 
 [dependencies.rocket]
diff --git a/examples/state/Cargo.toml b/examples/state/Cargo.toml
index 41117c6e..c2f518f5 100644
--- a/examples/state/Cargo.toml
+++ b/examples/state/Cargo.toml
@@ -2,7 +2,7 @@
 name = "state"
 version = "0.0.0"
 workspace = "../"
-edition = "2018"
+edition = "2021"
 publish = false
 
 [dependencies]
diff --git a/examples/static-files/Cargo.toml b/examples/static-files/Cargo.toml
index 4fab9ba5..0f5cafb1 100644
--- a/examples/static-files/Cargo.toml
+++ b/examples/static-files/Cargo.toml
@@ -2,7 +2,7 @@
 name = "static-files"
 version = "0.0.0"
 workspace = "../"
-edition = "2018"
+edition = "2021"
 publish = false
 
 [dependencies]
diff --git a/examples/templating/Cargo.toml b/examples/templating/Cargo.toml
index 9d2146ee..1fcee3c3 100644
--- a/examples/templating/Cargo.toml
+++ b/examples/templating/Cargo.toml
@@ -2,7 +2,7 @@
 name = "templating"
 version = "0.0.0"
 workspace = "../"
-edition = "2018"
+edition = "2021"
 publish = false
 
 [dependencies]
diff --git a/examples/testing/Cargo.toml b/examples/testing/Cargo.toml
index 79d053f1..f15eac40 100644
--- a/examples/testing/Cargo.toml
+++ b/examples/testing/Cargo.toml
@@ -2,7 +2,7 @@
 name = "testing"
 version = "0.0.0"
 workspace = "../"
-edition = "2018"
+edition = "2021"
 publish = false
 
 [dependencies]
diff --git a/examples/tls/Cargo.toml b/examples/tls/Cargo.toml
index f179fbfa..50eb6511 100644
--- a/examples/tls/Cargo.toml
+++ b/examples/tls/Cargo.toml
@@ -2,7 +2,7 @@
 name = "tls"
 version = "0.0.0"
 workspace = "../"
-edition = "2018"
+edition = "2021"
 publish = false
 
 [dependencies]
diff --git a/examples/todo/Cargo.toml b/examples/todo/Cargo.toml
index 6e1c0e0a..854570a9 100644
--- a/examples/todo/Cargo.toml
+++ b/examples/todo/Cargo.toml
@@ -2,7 +2,7 @@
 name = "todo"
 version = "0.0.0"
 workspace = "../"
-edition = "2018"
+edition = "2021"
 publish = false
 
 [dependencies]
diff --git a/site/tests/Cargo.toml b/site/tests/Cargo.toml
index e95491bf..5a01ce73 100644
--- a/site/tests/Cargo.toml
+++ b/site/tests/Cargo.toml
@@ -2,7 +2,7 @@
 name = "rocket_guide_tests"
 version = "0.5.0-rc.1"
 workspace = "../../"
-edition = "2018"
+edition = "2021"
 publish = false
 
 [dependencies]