diff --git a/basics/error_handling/Cargo.toml b/basics/error_handling/Cargo.toml
index d5cd6ae2..2acf6f37 100644
--- a/basics/error_handling/Cargo.toml
+++ b/basics/error_handling/Cargo.toml
@@ -4,7 +4,7 @@ version = "1.0.0"
 edition = "2021"
 
 [dependencies]
-actix-web = "3"
+actix-web = "4.0.0-beta.21"
 derive_more = "0.99.2"
-rand = "0.7"
-env_logger = "0.8"
+rand = "0.8"
+env_logger = "0.9"
diff --git a/basics/error_handling/src/main.rs b/basics/error_handling/src/main.rs
index da6ad5c3..ee16246d 100644
--- a/basics/error_handling/src/main.rs
+++ b/basics/error_handling/src/main.rs
@@ -33,7 +33,7 @@ pub enum CustomError {
 
 impl Distribution<CustomError> for Standard {
     fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> CustomError {
-        match rng.gen_range(0, 4) {
+        match rng.gen_range(0..4) {
             0 => CustomError::CustomOne,
             1 => CustomError::CustomTwo,
             2 => CustomError::CustomThree,