hyperium · seanmonstar · Nov 19, 2025 · Nov 19, 2025 · Nov 19, 2025
diff --git a/Cargo.toml b/Cargo.toml
@@ -19,9 +19,8 @@ A set of types for representing HTTP requests and responses.
 """
 keywords = ["http"]
 categories = ["web-programming"]
-edition = "2018"
-# When updating this value, don't forget to also adjust the GitHub Actions config.
-rust-version = "1.49.0"
+edition = "2021"
+rust-version = "1.57.0"

 [workspace]
 members = [
@@ -43,7 +42,7 @@ itoa = "1"

 [dev-dependencies]
 quickcheck = "1"
-rand = "0.9.1"
+rand = "0.8.0"
 serde = "1.0"
 serde_json = "1.0"
 doc-comment = "0.3"
diff --git a/README.md b/README.md
@@ -62,9 +62,9 @@ fn main() {

 # Supported Rust Versions

-This project follows the [Tokio MSRV][msrv] and is currently set to `1.49`.
+This project follows the [hyper's MSRV _policy_][msrv], though it can be lower, and is currently set to `1.57`.

-[msrv]: https://github.com/tokio-rs/tokio/#supported-rust-versions
+[msrv]: https://hyper.rs/contrib/msrv/

 # License


diff --git a/tests/header_map_fuzz.rs b/tests/header_map_fuzz.rs
@@ -2,8 +2,8 @@ use http::header::*;
 use http::*;

 use quickcheck::{Arbitrary, Gen, QuickCheck, TestResult};
-use rand::prelude::IndexedRandom;
 use rand::rngs::StdRng;
+use rand::seq::SliceRandom;
 use rand::{Rng, SeedableRng};

 use std::collections::HashMap;
@@ -76,12 +76,12 @@ impl Fuzz {

        let mut steps = vec![];
        let mut expect = AltMap::default();
-        let num = rng.random_range(5..500);
+        let num = rng.gen_range(5..500);

        let weight = Weight {
-            insert: rng.random_range(1..10),
-            remove: rng.random_range(1..10),
-            append: rng.random_range(1..10),
+            insert: rng.gen_range(1..10),
+            remove: rng.gen_range(1..10),
+            append: rng.gen_range(1..10),
        };

        while steps.len() < num {
@@ -112,7 +112,7 @@ impl Fuzz {

 impl Arbitrary for Fuzz {
    fn arbitrary(_: &mut Gen) -> Self {
-        Self::new(rand::rng().random())
+        Self::new(rand::thread_rng().gen())
    }
 }

@@ -130,7 +130,7 @@ impl AltMap {
    fn gen_action(&mut self, weight: &Weight, rng: &mut StdRng) -> Action {
        let sum = weight.insert + weight.remove + weight.append;

-        let mut num = rng.random_range(0..sum);
+        let mut num = rng.gen_range(0..sum);

        if num < weight.insert {
            return self.gen_insert(rng);
@@ -180,7 +180,7 @@ impl AltMap {

    /// Negative numbers weigh finding an existing header higher
    fn gen_name(&self, weight: i32, rng: &mut StdRng) -> HeaderName {
-        let mut existing = rng.random_ratio(1, weight.abs() as u32);
+        let mut existing = rng.gen_ratio(1, weight.abs() as u32);

        if weight < 0 {
            existing = !existing;
@@ -202,7 +202,7 @@ impl AltMap {
        if self.map.is_empty() {
            None
        } else {
-            let n = rng.random_range(0..self.map.len());
+            let n = rng.gen_range(0..self.map.len());
            self.map.keys().nth(n).map(Clone::clone)
        }
    }
@@ -337,7 +337,7 @@ fn gen_header_name(g: &mut StdRng) -> HeaderName {
        header::X_XSS_PROTECTION,
    ];

-    if g.random_ratio(1, 2) {
+    if g.gen_ratio(1, 2) {
        STANDARD_HEADERS.choose(g).unwrap().clone()
    } else {
        let value = gen_string(g, 1, 25);