Update MSRV in README.md files (#527)

The new MSRV after #523 is 1.71

README.md

@@ -13,27 +13,27 @@ Additionally all crates do not require the standard library (i.e. `no_std` capab
 
 | Algorithm | Crate | Crates.io | Documentation | MSRV | [Security] |
 |-----------|-------|:---------:|:-------------:|:----:|:----------:|
-| [Ascon] hash | [`ascon‑hash`] | [![crates.io](https://img.shields.io/crates/v/ascon-hash.svg)](https://crates.io/crates/ascon-hash) | [![Documentation](https://docs.rs/ascon-hash/badge.svg)](https://docs.rs/ascon-hash) | ![MSRV 1.65][msrv-1.65] | :green_heart: |
-| [BelT] hash | [`belt‑hash`] | [![crates.io](https://img.shields.io/crates/v/belt-hash.svg)](https://crates.io/crates/belt-hash) | [![Documentation](https://docs.rs/belt-hash/badge.svg)](https://docs.rs/belt-hash) | ![MSRV 1.65][msrv-1.65] | :green_heart: |
-| [BLAKE2] | [`blake2`] | [![crates.io](https://img.shields.io/crates/v/blake2.svg)](https://crates.io/crates/blake2) | [![Documentation](https://docs.rs/blake2/badge.svg)](https://docs.rs/blake2) | ![MSRV 1.65][msrv-1.65] | :green_heart: |
-| [FSB] | [`fsb`] | [![crates.io](https://img.shields.io/crates/v/fsb.svg)](https://crates.io/crates/fsb) | [![Documentation](https://docs.rs/fsb/badge.svg)](https://docs.rs/fsb) | ![MSRV 1.65][msrv-1.65] | :green_heart: |
-| [GOST R 34.11-94][GOST94] | [`gost94`] | [![crates.io](https://img.shields.io/crates/v/gost94.svg)](https://crates.io/crates/gost94) | [![Documentation](https://docs.rs/gost94/badge.svg)](https://docs.rs/gost94) | ![MSRV 1.65][msrv-1.65] | :yellow_heart: |
-| [Grøstl] (Groestl) | [`groestl`] | [![crates.io](https://img.shields.io/crates/v/groestl.svg)](https://crates.io/crates/groestl) | [![Documentation](https://docs.rs/groestl/badge.svg)](https://docs.rs/groestl) | ![MSRV 1.65][msrv-1.65] | :green_heart: |
-| [JH] | [`jh`] | [![crates.io](https://img.shields.io/crates/v/jh.svg)](https://crates.io/crates/jh) | [![Documentation](https://docs.rs/jh/badge.svg)](https://docs.rs/jh) | ![MSRV 1.65][msrv-1.65] | :green_heart: |
-| [KangarooTwelve] | [`k12`] | [![crates.io](https://img.shields.io/crates/v/k12.svg)](https://crates.io/crates/k12) | [![Documentation](https://docs.rs/k12/badge.svg)](https://docs.rs/k12) | ![MSRV 1.65][msrv-1.65] | :green_heart: |
-| [MD2] | [`md2`] | [![crates.io](https://img.shields.io/crates/v/md2.svg)](https://crates.io/crates/md2) | [![Documentation](https://docs.rs/md2/badge.svg)](https://docs.rs/md2) | ![MSRV 1.65][msrv-1.65] | :broken_heart: |
-| [MD4] | [`md4`] | [![crates.io](https://img.shields.io/crates/v/md4.svg)](https://crates.io/crates/md4) | [![Documentation](https://docs.rs/md4/badge.svg)](https://docs.rs/md4) | ![MSRV 1.65][msrv-1.65] | :broken_heart: |
-| [MD5] | [`md5`] [:exclamation:] | [![crates.io](https://img.shields.io/crates/v/md-5.svg)](https://crates.io/crates/md-5) | [![Documentation](https://docs.rs/md-5/badge.svg)](https://docs.rs/md-5) | ![MSRV 1.65][msrv-1.65] | :broken_heart: |
-| [RIPEMD] | [`ripemd`] | [![crates.io](https://img.shields.io/crates/v/ripemd.svg)](https://crates.io/crates/ripemd) | [![Documentation](https://docs.rs/ripemd/badge.svg)](https://docs.rs/ripemd) | ![MSRV 1.65][msrv-1.65] | :green_heart: |
-| [SHA-1] | [`sha1`] | [![crates.io](https://img.shields.io/crates/v/sha1.svg)](https://crates.io/crates/sha1) | [![Documentation](https://docs.rs/sha1/badge.svg)](https://docs.rs/sha1) | ![MSRV 1.65][msrv-1.65] | :broken_heart: |
-| [SHA-2] | [`sha2`] | [![crates.io](https://img.shields.io/crates/v/sha2.svg)](https://crates.io/crates/sha2) | [![Documentation](https://docs.rs/sha2/badge.svg)](https://docs.rs/sha2) | ![MSRV 1.65][msrv-1.65] | :green_heart: |
-| [SHA-3] (Keccak) | [`sha3`] | [![crates.io](https://img.shields.io/crates/v/sha3.svg)](https://crates.io/crates/sha3) | [![Documentation](https://docs.rs/sha3/badge.svg)](https://docs.rs/sha3) | ![MSRV 1.65][msrv-1.65] | :green_heart: |
-| [SHABAL] | [`shabal`] | [![crates.io](https://img.shields.io/crates/v/shabal.svg)](https://crates.io/crates/shabal) | [![Documentation](https://docs.rs/shabal/badge.svg)](https://docs.rs/shabal) | ![MSRV 1.65][msrv-1.65] | :green_heart: |
-| [Skein] | [`skein`] | [![crates.io](https://img.shields.io/crates/v/skein.svg)](https://crates.io/crates/skein) | [![Documentation](https://docs.rs/skein/badge.svg)](https://docs.rs/skein) | ![MSRV 1.65][msrv-1.65] | :green_heart: |
-| [SM3] (OSCCA GM/T 0004-2012) | [`sm3`] | [![crates.io](https://img.shields.io/crates/v/sm3.svg)](https://crates.io/crates/sm3) | [![Documentation](https://docs.rs/sm3/badge.svg)](https://docs.rs/sm3) | ![MSRV 1.65][msrv-1.65] | :green_heart: |
-| [Streebog] (GOST R 34.11-2012) | [`streebog`] | [![crates.io](https://img.shields.io/crates/v/streebog.svg)](https://crates.io/crates/streebog) | [![Documentation](https://docs.rs/streebog/badge.svg)](https://docs.rs/streebog) | ![MSRV 1.65][msrv-1.65] | :yellow_heart: |
-| [Tiger] | [`tiger`] | [![crates.io](https://img.shields.io/crates/v/tiger.svg)](https://crates.io/crates/tiger) | [![Documentation](https://docs.rs/tiger/badge.svg)](https://docs.rs/tiger) | ![MSRV 1.65][msrv-1.65] | :green_heart: |
-| [Whirlpool] | [`whirlpool`] | [![crates.io](https://img.shields.io/crates/v/whirlpool.svg)](https://crates.io/crates/whirlpool) | [![Documentation](https://docs.rs/whirlpool/badge.svg)](https://docs.rs/whirlpool) | ![MSRV 1.65][msrv-1.65] | :green_heart: |
+| [Ascon] hash | [`ascon‑hash`] | [![crates.io](https://img.shields.io/crates/v/ascon-hash.svg)](https://crates.io/crates/ascon-hash) | [![Documentation](https://docs.rs/ascon-hash/badge.svg)](https://docs.rs/ascon-hash) | ![MSRV 1.71][msrv-1.71] | :green_heart: |
+| [BelT] hash | [`belt‑hash`] | [![crates.io](https://img.shields.io/crates/v/belt-hash.svg)](https://crates.io/crates/belt-hash) | [![Documentation](https://docs.rs/belt-hash/badge.svg)](https://docs.rs/belt-hash) | ![MSRV 1.71][msrv-1.71] | :green_heart: |
+| [BLAKE2] | [`blake2`] | [![crates.io](https://img.shields.io/crates/v/blake2.svg)](https://crates.io/crates/blake2) | [![Documentation](https://docs.rs/blake2/badge.svg)](https://docs.rs/blake2) | ![MSRV 1.71][msrv-1.71] | :green_heart: |
+| [FSB] | [`fsb`] | [![crates.io](https://img.shields.io/crates/v/fsb.svg)](https://crates.io/crates/fsb) | [![Documentation](https://docs.rs/fsb/badge.svg)](https://docs.rs/fsb) | ![MSRV 1.71][msrv-1.71] | :green_heart: |
+| [GOST R 34.11-94][GOST94] | [`gost94`] | [![crates.io](https://img.shields.io/crates/v/gost94.svg)](https://crates.io/crates/gost94) | [![Documentation](https://docs.rs/gost94/badge.svg)](https://docs.rs/gost94) | ![MSRV 1.71][msrv-1.71] | :yellow_heart: |
+| [Grøstl] (Groestl) | [`groestl`] | [![crates.io](https://img.shields.io/crates/v/groestl.svg)](https://crates.io/crates/groestl) | [![Documentation](https://docs.rs/groestl/badge.svg)](https://docs.rs/groestl) | ![MSRV 1.71][msrv-1.71] | :green_heart: |
+| [JH] | [`jh`] | [![crates.io](https://img.shields.io/crates/v/jh.svg)](https://crates.io/crates/jh) | [![Documentation](https://docs.rs/jh/badge.svg)](https://docs.rs/jh) | ![MSRV 1.71][msrv-1.71] | :green_heart: |
+| [KangarooTwelve] | [`k12`] | [![crates.io](https://img.shields.io/crates/v/k12.svg)](https://crates.io/crates/k12) | [![Documentation](https://docs.rs/k12/badge.svg)](https://docs.rs/k12) | ![MSRV 1.71][msrv-1.71] | :green_heart: |
+| [MD2] | [`md2`] | [![crates.io](https://img.shields.io/crates/v/md2.svg)](https://crates.io/crates/md2) | [![Documentation](https://docs.rs/md2/badge.svg)](https://docs.rs/md2) | ![MSRV 1.71][msrv-1.71] | :broken_heart: |
+| [MD4] | [`md4`] | [![crates.io](https://img.shields.io/crates/v/md4.svg)](https://crates.io/crates/md4) | [![Documentation](https://docs.rs/md4/badge.svg)](https://docs.rs/md4) | ![MSRV 1.71][msrv-1.71] | :broken_heart: |
+| [MD5] | [`md5`] [:exclamation:] | [![crates.io](https://img.shields.io/crates/v/md-5.svg)](https://crates.io/crates/md-5) | [![Documentation](https://docs.rs/md-5/badge.svg)](https://docs.rs/md-5) | ![MSRV 1.71][msrv-1.71] | :broken_heart: |
+| [RIPEMD] | [`ripemd`] | [![crates.io](https://img.shields.io/crates/v/ripemd.svg)](https://crates.io/crates/ripemd) | [![Documentation](https://docs.rs/ripemd/badge.svg)](https://docs.rs/ripemd) | ![MSRV 1.71][msrv-1.71] | :green_heart: |
+| [SHA-1] | [`sha1`] | [![crates.io](https://img.shields.io/crates/v/sha1.svg)](https://crates.io/crates/sha1) | [![Documentation](https://docs.rs/sha1/badge.svg)](https://docs.rs/sha1) | ![MSRV 1.71][msrv-1.71] | :broken_heart: |
+| [SHA-2] | [`sha2`] | [![crates.io](https://img.shields.io/crates/v/sha2.svg)](https://crates.io/crates/sha2) | [![Documentation](https://docs.rs/sha2/badge.svg)](https://docs.rs/sha2) | ![MSRV 1.71][msrv-1.71] | :green_heart: |
+| [SHA-3] (Keccak) | [`sha3`] | [![crates.io](https://img.shields.io/crates/v/sha3.svg)](https://crates.io/crates/sha3) | [![Documentation](https://docs.rs/sha3/badge.svg)](https://docs.rs/sha3) | ![MSRV 1.71][msrv-1.71] | :green_heart: |
+| [SHABAL] | [`shabal`] | [![crates.io](https://img.shields.io/crates/v/shabal.svg)](https://crates.io/crates/shabal) | [![Documentation](https://docs.rs/shabal/badge.svg)](https://docs.rs/shabal) | ![MSRV 1.71][msrv-1.71] | :green_heart: |
+| [Skein] | [`skein`] | [![crates.io](https://img.shields.io/crates/v/skein.svg)](https://crates.io/crates/skein) | [![Documentation](https://docs.rs/skein/badge.svg)](https://docs.rs/skein) | ![MSRV 1.71][msrv-1.71] | :green_heart: |
+| [SM3] (OSCCA GM/T 0004-2012) | [`sm3`] | [![crates.io](https://img.shields.io/crates/v/sm3.svg)](https://crates.io/crates/sm3) | [![Documentation](https://docs.rs/sm3/badge.svg)](https://docs.rs/sm3) | ![MSRV 1.71][msrv-1.71] | :green_heart: |
+| [Streebog] (GOST R 34.11-2012) | [`streebog`] | [![crates.io](https://img.shields.io/crates/v/streebog.svg)](https://crates.io/crates/streebog) | [![Documentation](https://docs.rs/streebog/badge.svg)](https://docs.rs/streebog) | ![MSRV 1.71][msrv-1.71] | :yellow_heart: |
+| [Tiger] | [`tiger`] | [![crates.io](https://img.shields.io/crates/v/tiger.svg)](https://crates.io/crates/tiger) | [![Documentation](https://docs.rs/tiger/badge.svg)](https://docs.rs/tiger) | ![MSRV 1.71][msrv-1.71] | :green_heart: |
+| [Whirlpool] | [`whirlpool`] | [![crates.io](https://img.shields.io/crates/v/whirlpool.svg)](https://crates.io/crates/whirlpool) | [![Documentation](https://docs.rs/whirlpool/badge.svg)](https://docs.rs/whirlpool) | ![MSRV 1.71][msrv-1.71] | :green_heart: |
 
 NOTE: the [`blake3`] crate implements the `digest` traits used by the rest of the hashes in this repository, but is maintained by the BLAKE3 team.
 
@@ -233,7 +233,7 @@ Unless you explicitly state otherwise, any contribution intentionally submitted
 [license-image]: https://img.shields.io/badge/license-Apache2.0/MIT-blue.svg
 [deps-image]: https://deps.rs/repo/github/RustCrypto/hashes/status.svg
 [deps-link]: https://deps.rs/repo/github/RustCrypto/hashes
-[msrv-1.65]: https://img.shields.io/badge/rustc-1.65.0+-blue.svg
+[msrv-1.71]: https://img.shields.io/badge/rustc-1.71.0+-blue.svg
 
 [//]: # (crates)
 

ascon-hash/README.md

@@ -21,7 +21,7 @@ USE AT YOUR OWN RISK!
 
 ## Minimum Supported Rust Version
 
-This crate requires **Rust 1.65** at a minimum.
+This crate requires **Rust 1.71** at a minimum.
 
 We may change the MSRV in the future, but it will be accompanied by a minor
 version bump.
@@ -48,7 +48,7 @@ dual licensed as above, without any additional terms or conditions.
 [docs-image]: https://docs.rs/ascon-hash/badge.svg
 [docs-link]: https://docs.rs/ascon-hash/
 [license-image]: https://img.shields.io/badge/license-Apache2.0/MIT-blue.svg
-[rustc-image]: https://img.shields.io/badge/rustc-1.65+-blue.svg
+[rustc-image]: https://img.shields.io/badge/rustc-1.71+-blue.svg
 [chat-image]: https://img.shields.io/badge/zulip-join_chat-blue.svg
 [chat-link]: https://rustcrypto.zulipchat.com/#narrow/stream/260041-hashes
 [build-image]: https://github.com/RustCrypto/hashes/workflows/ascon-hash/badge.svg?branch=master

belt-hash/README.md

@@ -13,7 +13,7 @@ Pure Rust implementation of the [BelT] hash function specified in [STB 34.101.31
 
 ## Minimum Supported Rust Version
 
-Rust **1.65** or higher.
+Rust **1.71** or higher.
 
 Minimum supported Rust version can be changed in the future, but it will be
 done with a minor version bump.
@@ -45,7 +45,7 @@ dual licensed as above, without any additional terms or conditions.
 [docs-image]: https://docs.rs/belt-hash/badge.svg
 [docs-link]: https://docs.rs/belt-hash
 [license-image]: https://img.shields.io/badge/license-Apache2.0/MIT-blue.svg
-[rustc-image]: https://img.shields.io/badge/rustc-1.65+-blue.svg
+[rustc-image]: https://img.shields.io/badge/rustc-1.71+-blue.svg
 [chat-image]: https://img.shields.io/badge/zulip-join_chat-blue.svg
 [chat-link]: https://rustcrypto.zulipchat.com/#narrow/stream/260041-hashes
 [build-image]: https://github.com/RustCrypto/hashes/workflows/belt-hash/badge.svg?branch=master

blake2/README.md

@@ -13,7 +13,7 @@ Pure Rust implementation of the [BLAKE2 hash function][1] family.
 
 ## Minimum Supported Rust Version
 
-Rust **1.65** or higher.
+Rust **1.71** or higher.
 
 Minimum supported Rust version can be changed in the future, but it will be
 done with a minor version bump.
@@ -47,7 +47,7 @@ dual licensed as above, without any additional terms or conditions.
 [license-image]: https://img.shields.io/badge/license-Apache2.0/MIT-blue.svg
 [chat-image]: https://img.shields.io/badge/zulip-join_chat-blue.svg
 [chat-link]: https://rustcrypto.zulipchat.com/#narrow/stream/260041-hashes
-[rustc-image]: https://img.shields.io/badge/rustc-1.65+-blue.svg
+[rustc-image]: https://img.shields.io/badge/rustc-1.71+-blue.svg
 [build-image]: https://github.com/RustCrypto/hashes/workflows/blake2/badge.svg?branch=master
 [build-link]: https://github.com/RustCrypto/hashes/actions?query=workflow%3Ablake2
 

fsb/README.md

@@ -13,7 +13,7 @@ Pure Rust implementation of the [FSB hash function][1] family.
 
 ## Minimum Supported Rust Version
 
-Rust **1.65** or higher.
+Rust **1.71** or higher.
 
 Minimum supported Rust version can be changed in the future, but it will be
 done with a minor version bump.
@@ -47,7 +47,7 @@ dual licensed as above, without any additional terms or conditions.
 [license-image]: https://img.shields.io/badge/license-Apache2.0/MIT-blue.svg
 [chat-image]: https://img.shields.io/badge/zulip-join_chat-blue.svg
 [chat-link]: https://rustcrypto.zulipchat.com/#narrow/stream/260041-hashes
-[rustc-image]: https://img.shields.io/badge/rustc-1.65+-blue.svg
+[rustc-image]: https://img.shields.io/badge/rustc-1.71+-blue.svg
 [build-image]: https://github.com/RustCrypto/hashes/workflows/fsb/badge.svg?branch=master
 [build-link]: https://github.com/RustCrypto/hashes/actions?query=workflow%3Afsb
 

gost94/README.md

@@ -13,7 +13,7 @@ Pure Rust implementation of the [GOST R 34.11-94 hash function][1].
 
 ## Minimum Supported Rust Version
 
-Rust **1.41** or higher.
+Rust **1.71** or higher.
 
 Minimum supported Rust version can be changed in the future, but it will be
 done with a minor version bump.
@@ -45,7 +45,7 @@ dual licensed as above, without any additional terms or conditions.
 [docs-image]: https://docs.rs/gost94/badge.svg
 [docs-link]: https://docs.rs/gost94/
 [license-image]: https://img.shields.io/badge/license-Apache2.0/MIT-blue.svg
-[rustc-image]: https://img.shields.io/badge/rustc-1.41+-blue.svg
+[rustc-image]: https://img.shields.io/badge/rustc-1.71+-blue.svg
 [chat-image]: https://img.shields.io/badge/zulip-join_chat-blue.svg
 [chat-link]: https://rustcrypto.zulipchat.com/#narrow/stream/260041-hashes
 [build-image]: https://github.com/RustCrypto/hashes/workflows/gost94/badge.svg?branch=master

groestl/README.md

@@ -13,7 +13,7 @@ Pure Rust implementation of the [Grøstl hash function][1].
 
 ## Minimum Supported Rust Version
 
-Rust **1.41** or higher.
+Rust **1.71** or higher.
 
 Minimum supported Rust version can be changed in the future, but it will be
 done with a minor version bump.
@@ -45,7 +45,7 @@ dual licensed as above, without any additional terms or conditions.
 [docs-image]: https://docs.rs/groestl/badge.svg
 [docs-link]: https://docs.rs/groestl/
 [license-image]: https://img.shields.io/badge/license-Apache2.0/MIT-blue.svg
-[rustc-image]: https://img.shields.io/badge/rustc-1.41+-blue.svg
+[rustc-image]: https://img.shields.io/badge/rustc-1.71+-blue.svg
 [chat-image]: https://img.shields.io/badge/zulip-join_chat-blue.svg
 [chat-link]: https://rustcrypto.zulipchat.com/#narrow/stream/260041-hashes
 [build-image]: https://github.com/RustCrypto/hashes/workflows/groestl/badge.svg?branch=master

jh/README.md

@@ -13,7 +13,7 @@ Pure Rust implementation of the [JH] cryptographic hash function.
 
 ## Minimum Supported Rust Version
 
-Rust **1.57** or higher.
+Rust **1.71** or higher.
 
 Minimum supported Rust version can be changed in the future, but it will be
 done with a minor version bump.
@@ -45,7 +45,7 @@ dual licensed as above, without any additional terms or conditions.
 [docs-image]: https://docs.rs/jh/badge.svg
 [docs-link]: https://docs.rs/jh/
 [license-image]: https://img.shields.io/badge/license-Apache2.0/MIT-blue.svg
-[rustc-image]: https://img.shields.io/badge/rustc-1.57+-blue.svg
+[rustc-image]: https://img.shields.io/badge/rustc-1.71+-blue.svg
 [chat-image]: https://img.shields.io/badge/zulip-join_chat-blue.svg
 [chat-link]: https://rustcrypto.zulipchat.com/#narrow/stream/260041-hashes
 [build-image]: https://github.com/RustCrypto/hashes/workflows/jh/badge.svg?branch=master

k12/README.md

@@ -13,7 +13,7 @@ Pure Rust implementation of the [KangarooTwelve][1] eXtendable-Output Function
 
 ## Minimum Supported Rust Version
 
-Rust **1.56** or higher.
+Rust **1.71** or higher.
 
 Minimum supported Rust version can be changed in the future, but it will be
 done with a minor version bump.
@@ -45,7 +45,7 @@ dual licensed as above, without any additional terms or conditions.
 [docs-image]: https://docs.rs/k12/badge.svg
 [docs-link]: https://docs.rs/k12/
 [license-image]: https://img.shields.io/badge/license-Apache2.0/MIT-blue.svg
-[rustc-image]: https://img.shields.io/badge/rustc-1.56+-blue.svg
+[rustc-image]: https://img.shields.io/badge/rustc-1.71+-blue.svg
 [chat-image]: https://img.shields.io/badge/zulip-join_chat-blue.svg
 [chat-link]: https://rustcrypto.zulipchat.com/#narrow/stream/260041-hashes
 [build-image]: https://github.com/RustCrypto/hashes/workflows/k12/badge.svg?branch=master

md2/README.md

@@ -13,7 +13,7 @@ Pure Rust implementation of the [MD2 hash function][1].
 
 ## Minimum Supported Rust Version
 
-Rust **1.41** or higher.
+Rust **1.71** or higher.
 
 Minimum supported Rust version can be changed in the future, but it will be
 done with a minor version bump.
@@ -45,7 +45,7 @@ dual licensed as above, without any additional terms or conditions.
 [docs-image]: https://docs.rs/md2/badge.svg
 [docs-link]: https://docs.rs/md2/
 [license-image]: https://img.shields.io/badge/license-Apache2.0/MIT-blue.svg
-[rustc-image]: https://img.shields.io/badge/rustc-1.41+-blue.svg
+[rustc-image]: https://img.shields.io/badge/rustc-1.71+-blue.svg
 [chat-image]: https://img.shields.io/badge/zulip-join_chat-blue.svg
 [chat-link]: https://rustcrypto.zulipchat.com/#narrow/stream/260041-hashes
 [build-image]: https://github.com/RustCrypto/hashes/workflows/md2/badge.svg?branch=master

md4/README.md

@@ -13,7 +13,7 @@ Pure Rust implementation of the [MD4 hash function][1].
 
 ## Minimum Supported Rust Version
 
-Rust **1.41** or higher.
+Rust **1.71** or higher.
 
 Minimum supported Rust version can be changed in the future, but it will be
 done with a minor version bump.
@@ -45,7 +45,7 @@ dual licensed as above, without any additional terms or conditions.
 [docs-image]: https://docs.rs/md4/badge.svg
 [docs-link]: https://docs.rs/md4/
 [license-image]: https://img.shields.io/badge/license-Apache2.0/MIT-blue.svg
-[rustc-image]: https://img.shields.io/badge/rustc-1.41+-blue.svg
+[rustc-image]: https://img.shields.io/badge/rustc-1.71+-blue.svg
 [chat-image]: https://img.shields.io/badge/zulip-join_chat-blue.svg
 [chat-link]: https://rustcrypto.zulipchat.com/#narrow/stream/260041-hashes
 [build-image]: https://github.com/RustCrypto/hashes/workflows/md4/badge.svg?branch=master