diff --git a/.github/workflows/yescrypt.yml b/.github/workflows/yescrypt.yml
index 96c92492..70241927 100644
--- a/.github/workflows/yescrypt.yml
+++ b/.github/workflows/yescrypt.yml
@@ -29,7 +29,7 @@ jobs:
         include:
           # 32-bit Linux
           - target: i686-unknown-linux-gnu
-            rust: 1.71.0 # MSRV
+            rust: 1.72.0 # MSRV
             deps: sudo apt update && sudo apt install gcc-multilib
           - target: i686-unknown-linux-gnu
             rust: stable
@@ -37,7 +37,7 @@ jobs:
 
           # 64-bit Linux
           - target: x86_64-unknown-linux-gnu
-            rust: 1.71.0 # MSRV
+            rust: 1.72.0 # MSRV
           - target: x86_64-unknown-linux-gnu
             rust: stable
     steps:
diff --git a/yescrypt/Cargo.toml b/yescrypt/Cargo.toml
index 58063e6d..ba2c1255 100644
--- a/yescrypt/Cargo.toml
+++ b/yescrypt/Cargo.toml
@@ -13,7 +13,7 @@ keywords = ["crypto", "hashing", "password", "phf"]
 categories = ["authentication", "cryptography", "no-std"]
 readme = "README.md"
 edition = "2021"
-rust-version = "1.60"
+rust-version = "1.72"
 
 [dependencies]
 libc = "0.2"
diff --git a/yescrypt/README.md b/yescrypt/README.md
index 0d5b18fd..e0a1cf30 100644
--- a/yescrypt/README.md
+++ b/yescrypt/README.md
@@ -13,7 +13,7 @@ Pure Rust implementation of the [yescrypt] password hashing function.
 
 ## Minimum Supported Rust Version
 
-Rust **1.71** or higher.
+Rust **1.72** or higher.
 
 Minimum supported Rust version can be changed in the future, but it will be
 done with a minor version bump.
diff --git a/yescrypt/src/lib.rs b/yescrypt/src/lib.rs
index f98d6107..6731faf1 100644
--- a/yescrypt/src/lib.rs
+++ b/yescrypt/src/lib.rs
@@ -307,7 +307,7 @@ pub unsafe fn yescrypt_r(
                         .wrapping_div(6),
                 )
                 .wrapping_add(1);
-            if !(need > buflen as usize || need < saltstrlen) {
+            if !(need > buflen || need < saltstrlen) {
                 if !(yescrypt_kdf(
                     shared,
                     local,
diff --git a/yescrypt/src/salsa20.rs b/yescrypt/src/salsa20.rs
index 8e68c9b9..1349cafa 100644
--- a/yescrypt/src/salsa20.rs
+++ b/yescrypt/src/salsa20.rs
@@ -2,7 +2,7 @@ use salsa20::cipher::Unsigned;
 
 use crate::{
     common::{blkcpy, blkxor},
-    size_t, uint32_t,
+    uint32_t,
 };
 
 pub(crate) unsafe fn salsa20_2(mut B: *mut uint32_t) {
diff --git a/yescrypt/src/sha256.rs b/yescrypt/src/sha256.rs
index 4730f8f7..eb67b0d1 100644
--- a/yescrypt/src/sha256.rs
+++ b/yescrypt/src/sha256.rs
@@ -15,10 +15,7 @@ pub unsafe fn SHA256_Buf(mut in_0: *const libc::c_void, mut len: size_t, mut dig
     use sha2::digest::array::Array;
     use sha2::Digest;
     let mut ctx = sha2::Sha256::new();
-    ctx.update(&*core::ptr::slice_from_raw_parts(
-        in_0 as *const u8,
-        len as usize,
-    ));
+    ctx.update(&*core::ptr::slice_from_raw_parts(in_0 as *const u8, len));
     ctx.finalize_into(Array::from_mut_slice(
         &mut *core::ptr::slice_from_raw_parts_mut(digest, 32),
     ));
@@ -34,17 +31,14 @@ pub unsafe fn HMAC_SHA256_Buf(
     use hmac::KeyInit;
     use hmac::Mac;
 
-    let key = &*core::ptr::slice_from_raw_parts(K as *const uint8_t, Klen as usize);
+    let key = &*core::ptr::slice_from_raw_parts(K as *const uint8_t, Klen);
 
     let mut hmac = hmac::Hmac::<sha2::Sha256>::new_from_slice(key)
         .expect("key length should always be valid with hmac");
 
     let mut in_0 = in_0;
     let mut len = len;
-    hmac.update(&*core::ptr::slice_from_raw_parts(
-        in_0 as *const u8,
-        len as usize,
-    ));
+    hmac.update(&*core::ptr::slice_from_raw_parts(in_0 as *const u8, len));
 
     let mac = hmac.finalize().into_bytes();
     memcpy(digest as *mut _, mac.as_ptr() as *const _, 32);
@@ -59,9 +53,9 @@ pub unsafe fn PBKDF2_SHA256(
     mut buf: *mut uint8_t,
     mut dkLen: size_t,
 ) {
-    let passwd = core::ptr::slice_from_raw_parts(passwd, passwdlen as usize);
-    let salt = core::ptr::slice_from_raw_parts(salt, saltlen as usize);
-    let res = core::ptr::slice_from_raw_parts_mut(buf, dkLen as usize);
+    let passwd = core::ptr::slice_from_raw_parts(passwd, passwdlen);
+    let salt = core::ptr::slice_from_raw_parts(salt, saltlen);
+    let res = core::ptr::slice_from_raw_parts_mut(buf, dkLen);
 
     pbkdf2::pbkdf2_hmac::<sha2::Sha256>(&*passwd, &*salt, c as u32, &mut *res);
 }