diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 1e5f354..0c87b60 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -15,8 +15,6 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
-      - name: Use Rust 1.53
-        run: rustup install 1.53
       - name: Run Rustfmt
         run: cargo fmt -- --check
       - name: Run Clippy
@@ -43,7 +41,7 @@ jobs:
       - run: cargo run --bin simple-factory
       - run: cargo run --bin singleton-local
       - run: cargo run --bin singleton-lazy
-      # - run: cargo run --bin singleton-mutex # Requires Rust 1.63
+      - run: cargo run --bin singleton-mutex
       - run: cargo run --bin singleton-once
       - run: cargo run --bin singleton-logger
       - run: cargo run --bin static-creation-method
diff --git a/Cargo.toml b/Cargo.toml
index 526310b..dfc814a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,4 +1,5 @@
 [workspace]
+resolver = "2"
 
 members = [
   "behavioral/chain-of-responsibility",
@@ -30,3 +31,6 @@ members = [
   "structural/flyweight",
   "structural/proxy",
 ]
+
+[patch.crates-io]
+draw = { git = "https://github.com/fadeevab/draw", branch = "master" }
diff --git a/README.md b/README.md
index cc4ee55..e897fe7 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ The repository is developed to be a part of the
 
 ## 🔧 Requirements
 
-These examples have been tested with a _stable_ `rustc 1.62` (2021 edition).
+These examples have been tested with a _stable_ `rustc 1.82` (2021 edition).
 
 All examples can be launched via the command line, using `cargo` as follows:
 
@@ -61,7 +61,7 @@ cargo run --bin prototype
 cargo run --bin simple-factory
 cargo run --bin singleton-local
 cargo run --bin singleton-lazy
-cargo run --bin singleton-mutex # Requires Rust 1.63
+cargo run --bin singleton-mutex
 cargo run --bin singleton-once
 cargo run --bin singleton-logger
 cargo run --bin static-creation-method
diff --git a/creational/singleton/how-to-create/README.md b/creational/singleton/how-to-create/README.md
index a771a4d..ef4123f 100644
--- a/creational/singleton/how-to-create/README.md
+++ b/creational/singleton/how-to-create/README.md
@@ -97,8 +97,7 @@ cargo run --bin singleton-once
 ⚠ Starting with `rustc 1.63`.
 
 > Starting with `Rust 1.63`, it can be easier to work with global mutable
-> singletons, although it's still preferable to avoid global variables in most
-> cases.
+> singletons.
 >
 > Now that `Mutex::new` is `const`, you can use global static `Mutex` locks
 > without needing lazy initialization.
diff --git a/creational/singleton/how-to-create/mutex.rs b/creational/singleton/how-to-create/mutex.rs
index 5cef072..787b7d2 100644
--- a/creational/singleton/how-to-create/mutex.rs
+++ b/creational/singleton/how-to-create/mutex.rs
@@ -2,8 +2,7 @@
 //! https://stackoverflow.com/questions/27791532/how-do-i-create-a-global-mutable-singleton
 //!
 //! Starting with Rust 1.63, it can be easier to work with global mutable
-//! singletons, although it's still preferable to avoid global variables in most
-//! cases.
+//! singletons.
 //!
 //! Now that `Mutex::new` is `const`, you can use global static `Mutex` locks
 //! without needing lazy initialization.
diff --git a/structural/bridge/main.rs b/structural/bridge/main.rs
index ff6cf61..d04e47e 100644
--- a/structural/bridge/main.rs
+++ b/structural/bridge/main.rs
@@ -1,3 +1,4 @@
+#![allow(unused)]
 mod device;
 mod remotes;
 
@@ -13,11 +14,13 @@ fn test_device(device: impl Device + Clone) {
     println!("Tests with basic remote.");
     let mut basic_remote = BasicRemote::new(device.clone());
     basic_remote.power();
+    basic_remote.volume_up();
     basic_remote.device().print_status();
 
     println!("Tests with advanced remote.");
     let mut advanced_remote = AdvancedRemote::new(device);
     advanced_remote.power();
-    advanced_remote.mute();
+    advanced_remote.volume_down();
+    advanced_remote.mute(); // Extended functionality of the advanced remote.
     advanced_remote.device().print_status();
 }
diff --git a/structural/decorator/main.rs b/structural/decorator/main.rs
index a92938c..c248efa 100644
--- a/structural/decorator/main.rs
+++ b/structural/decorator/main.rs
@@ -6,7 +6,7 @@ fn main() {
     // A buffered reader decorates a vector reader which wraps input data.
     let mut input = BufReader::new(Cursor::new("Input data"));
 
-    input.read(&mut buf).ok();
+    input.read_exact(&mut buf).ok();
 
     print!("Read from a buffered reader: ");