diff --git a/boring/src/aes.rs b/boring/src/aes.rs
index 12288763..2bf95466 100644
--- a/boring/src/aes.rs
+++ b/boring/src/aes.rs
@@ -58,7 +58,7 @@ impl AesKey {
     #[allow(deprecated)] // https://github.com/rust-lang/rust/issues/63566
     pub fn new_encrypt(key: &[u8]) -> Result<AesKey, KeyError> {
         unsafe {
-            assert!(key.len() <= c_int::max_value() as usize / 8);
+            assert!(key.len() <= c_int::MAX as usize / 8);
 
             let mut aes_key = MaybeUninit::uninit();
             let r = ffi::AES_set_encrypt_key(
@@ -82,7 +82,7 @@ impl AesKey {
     #[allow(deprecated)] // https://github.com/rust-lang/rust/issues/63566
     pub fn new_decrypt(key: &[u8]) -> Result<AesKey, KeyError> {
         unsafe {
-            assert!(key.len() <= c_int::max_value() as usize / 8);
+            assert!(key.len() <= c_int::MAX as usize / 8);
 
             let mut aes_key = MaybeUninit::uninit();
             let r = ffi::AES_set_decrypt_key(
diff --git a/boring/src/base64.rs b/boring/src/base64.rs
index 2e9ef17d..9b556384 100644
--- a/boring/src/base64.rs
+++ b/boring/src/base64.rs
@@ -14,7 +14,7 @@ use libc::c_int;
 ///
 /// [`EVP_EncodeBlock`]: https://www.openssl.org/docs/man1.1.1/man3/EVP_DecodeBlock.html
 pub fn encode_block(src: &[u8]) -> String {
-    assert!(src.len() <= c_int::max_value() as usize);
+    assert!(src.len() <= c_int::MAX as usize);
     let src_len = src.len();
 
     let len = encoded_len(src_len).unwrap();
@@ -48,7 +48,7 @@ pub fn decode_block(src: &str) -> Result<Vec<u8>, ErrorStack> {
         return Ok(vec![]);
     }
 
-    assert!(src.len() <= c_int::max_value() as usize);
+    assert!(src.len() <= c_int::MAX as usize);
     let src_len = src.len();
 
     let len = decoded_len(src_len).unwrap();
diff --git a/boring/src/bio.rs b/boring/src/bio.rs
index 55870ded..b6d52e09 100644
--- a/boring/src/bio.rs
+++ b/boring/src/bio.rs
@@ -26,7 +26,7 @@ impl<'a> MemBioSlice<'a> {
 
         ffi::init();
 
-        assert!(buf.len() <= BufLen::max_value() as usize);
+        assert!(buf.len() <= BufLen::MAX as usize);
         let bio = unsafe {
             cvt_p(BIO_new_mem_buf(
                 buf.as_ptr() as *const _,
diff --git a/boring/src/bn.rs b/boring/src/bn.rs
index 3990048d..b5b02077 100644
--- a/boring/src/bn.rs
+++ b/boring/src/bn.rs
@@ -159,7 +159,7 @@ impl BigNumRef {
     pub fn div_word(&mut self, w: u32) -> Result<u64, ErrorStack> {
         unsafe {
             let r = ffi::BN_div_word(self.as_ptr(), w.into());
-            if r == ffi::BN_ULONG::max_value() {
+            if r == ffi::BN_ULONG::MAX {
                 Err(ErrorStack::get())
             } else {
                 Ok(r.into())
@@ -176,7 +176,7 @@ impl BigNumRef {
     pub fn mod_word(&self, w: u32) -> Result<u64, ErrorStack> {
         unsafe {
             let r = ffi::BN_mod_word(self.as_ptr(), w.into());
-            if r == ffi::BN_ULONG::max_value() {
+            if r == ffi::BN_ULONG::MAX {
                 Err(ErrorStack::get())
             } else {
                 Ok(r.into())
@@ -987,7 +987,7 @@ impl BigNum {
     pub fn from_slice(n: &[u8]) -> Result<BigNum, ErrorStack> {
         unsafe {
             ffi::init();
-            assert!(n.len() <= c_int::max_value() as usize);
+            assert!(n.len() <= c_int::MAX as usize);
             cvt_p(ffi::BN_bin2bn(
                 n.as_ptr(),
                 n.len() as size_t,
diff --git a/boring/src/ecdsa.rs b/boring/src/ecdsa.rs
index 0d333003..782dbf20 100644
--- a/boring/src/ecdsa.rs
+++ b/boring/src/ecdsa.rs
@@ -35,7 +35,7 @@ impl EcdsaSig {
         T: HasPrivate,
     {
         unsafe {
-            assert!(data.len() <= c_int::max_value() as usize);
+            assert!(data.len() <= c_int::MAX as usize);
             let sig = cvt_p(ffi::ECDSA_do_sign(
                 data.as_ptr(),
                 data.len() as size_t,
@@ -94,7 +94,7 @@ impl EcdsaSigRef {
         T: HasPublic,
     {
         unsafe {
-            assert!(data.len() <= c_int::max_value() as usize);
+            assert!(data.len() <= c_int::MAX as usize);
             cvt_n(ffi::ECDSA_do_verify(
                 data.as_ptr(),
                 data.len() as size_t,
diff --git a/boring/src/macros.rs b/boring/src/macros.rs
index 0dcc5fae..b6cbeb8f 100644
--- a/boring/src/macros.rs
+++ b/boring/src/macros.rs
@@ -59,7 +59,7 @@ macro_rules! private_key_to_pem {
         ) -> Result<Vec<u8>, crate::error::ErrorStack> {
             unsafe {
                 let bio = crate::bio::MemBio::new()?;
-                assert!(passphrase.len() <= ::libc::c_int::max_value() as usize);
+                assert!(passphrase.len() <= ::libc::c_int::MAX as usize);
                 cvt($f(bio.as_ptr(),
                         self.as_ptr(),
                         cipher.as_ptr(),
@@ -108,7 +108,7 @@ macro_rules! from_der {
         pub fn $n(der: &[u8]) -> Result<$t, crate::error::ErrorStack> {
             unsafe {
                 crate::ffi::init();
-                let len = ::std::cmp::min(der.len(), <$len_ty>::max_value() as usize) as $len_ty;
+                let len = ::std::cmp::min(der.len(), <$len_ty>::MAX as usize) as $len_ty;
                 crate::cvt_p($f(::std::ptr::null_mut(), &mut der.as_ptr(), len))
                     .map(|p| ::foreign_types::ForeignType::from_ptr(p))
             }
diff --git a/boring/src/pkcs5.rs b/boring/src/pkcs5.rs
index 8503d0b3..91684661 100644
--- a/boring/src/pkcs5.rs
+++ b/boring/src/pkcs5.rs
@@ -32,7 +32,7 @@ pub fn bytes_to_key(
     count: u32,
 ) -> Result<KeyIvPair, ErrorStack> {
     unsafe {
-        assert!(data.len() <= c_int::max_value() as usize);
+        assert!(data.len() <= c_int::MAX as usize);
         let salt_ptr = match salt {
             Some(salt) => {
                 pub const PKCS5_SALT_LEN: c_int = 8;
@@ -90,9 +90,9 @@ pub fn pbkdf2_hmac(
     key: &mut [u8],
 ) -> Result<(), ErrorStack> {
     unsafe {
-        assert!(pass.len() <= c_int::max_value() as usize);
-        assert!(salt.len() <= c_int::max_value() as usize);
-        assert!(key.len() <= c_int::max_value() as usize);
+        assert!(pass.len() <= c_int::MAX as usize);
+        assert!(salt.len() <= c_int::MAX as usize);
+        assert!(key.len() <= c_int::MAX as usize);
 
         ffi::init();
         cvt(ffi::PKCS5_PBKDF2_HMAC(
diff --git a/boring/src/pkey.rs b/boring/src/pkey.rs
index e1c31855..b8a157f6 100644
--- a/boring/src/pkey.rs
+++ b/boring/src/pkey.rs
@@ -411,7 +411,7 @@ impl PKey<Private> {
     pub fn private_key_from_pkcs8(der: &[u8]) -> Result<PKey<Private>, ErrorStack> {
         unsafe {
             ffi::init();
-            let len = der.len().min(c_long::max_value() as usize) as c_long;
+            let len = der.len().min(c_long::MAX as usize) as c_long;
             let p8inf = cvt_p(ffi::d2i_PKCS8_PRIV_KEY_INFO(
                 ptr::null_mut(),
                 &mut der.as_ptr(),
diff --git a/boring/src/rand.rs b/boring/src/rand.rs
index c551b2f9..e5b843e0 100644
--- a/boring/src/rand.rs
+++ b/boring/src/rand.rs
@@ -35,7 +35,7 @@ use crate::error::ErrorStack;
 pub fn rand_bytes(buf: &mut [u8]) -> Result<(), ErrorStack> {
     unsafe {
         ffi::init();
-        assert!(buf.len() <= c_int::max_value() as usize);
+        assert!(buf.len() <= c_int::MAX as usize);
         cvt(ffi::RAND_bytes(buf.as_mut_ptr(), buf.len())).map(|_| ())
     }
 }
diff --git a/boring/src/rsa.rs b/boring/src/rsa.rs
index c17b36a3..5b85e9e1 100644
--- a/boring/src/rsa.rs
+++ b/boring/src/rsa.rs
@@ -151,7 +151,7 @@ where
         to: &mut [u8],
         padding: Padding,
     ) -> Result<usize, ErrorStack> {
-        assert!(from.len() <= i32::max_value() as usize);
+        assert!(from.len() <= i32::MAX as usize);
         assert!(to.len() >= self.size() as usize);
 
         unsafe {
@@ -178,7 +178,7 @@ where
         to: &mut [u8],
         padding: Padding,
     ) -> Result<usize, ErrorStack> {
-        assert!(from.len() <= i32::max_value() as usize);
+        assert!(from.len() <= i32::MAX as usize);
         assert!(to.len() >= self.size() as usize);
 
         unsafe {
@@ -378,7 +378,7 @@ where
         to: &mut [u8],
         padding: Padding,
     ) -> Result<usize, ErrorStack> {
-        assert!(from.len() <= i32::max_value() as usize);
+        assert!(from.len() <= i32::MAX as usize);
         assert!(to.len() >= self.size() as usize);
 
         unsafe {
@@ -404,7 +404,7 @@ where
         to: &mut [u8],
         padding: Padding,
     ) -> Result<usize, ErrorStack> {
-        assert!(from.len() <= i32::max_value() as usize);
+        assert!(from.len() <= i32::MAX as usize);
         assert!(to.len() >= self.size() as usize);
 
         unsafe {
diff --git a/boring/src/ssl/bio.rs b/boring/src/ssl/bio.rs
index b88fdaff..04f43558 100644
--- a/boring/src/ssl/bio.rs
+++ b/boring/src/ssl/bio.rs
@@ -84,7 +84,7 @@ pub unsafe extern "C" fn take_stream<S>(bio: *mut BIO) -> S {
 }
 
 pub unsafe fn set_dtls_mtu_size<S>(bio: *mut BIO, mtu_size: usize) {
-    if mtu_size as u64 > c_long::max_value() as u64 {
+    if mtu_size as u64 > c_long::MAX as u64 {
         panic!(
             "Given MTU size {} can't be represented in a positive `c_long` range",
             mtu_size
diff --git a/boring/src/ssl/mod.rs b/boring/src/ssl/mod.rs
index 0562b055..351b9376 100644
--- a/boring/src/ssl/mod.rs
+++ b/boring/src/ssl/mod.rs
@@ -1174,7 +1174,7 @@ impl SslContextBuilder {
     /// [`SSL_CTX_set_session_id_context`]: https://www.openssl.org/docs/manmaster/man3/SSL_CTX_set_session_id_context.html
     pub fn set_session_id_context(&mut self, sid_ctx: &[u8]) -> Result<(), ErrorStack> {
         unsafe {
-            assert!(sid_ctx.len() <= c_uint::max_value() as usize);
+            assert!(sid_ctx.len() <= c_uint::MAX as usize);
             cvt(ffi::SSL_CTX_set_session_id_context(
                 self.as_ptr(),
                 sid_ctx.as_ptr(),
@@ -1456,7 +1456,7 @@ impl SslContextBuilder {
         unsafe {
             #[cfg_attr(not(feature = "fips"), allow(clippy::unnecessary_cast))]
             {
-                assert!(protocols.len() <= ProtosLen::max_value() as usize);
+                assert!(protocols.len() <= ProtosLen::MAX as usize);
             }
             let r = ffi::SSL_CTX_set_alpn_protos(
                 self.as_ptr(),
@@ -2958,7 +2958,7 @@ impl SslRef {
         unsafe {
             #[cfg_attr(not(feature = "fips"), allow(clippy::unnecessary_cast))]
             {
-                assert!(protocols.len() <= ProtosLen::max_value() as usize);
+                assert!(protocols.len() <= ProtosLen::MAX as usize);
             }
             let r = ffi::SSL_set_alpn_protos(
                 self.as_ptr(),
@@ -3566,7 +3566,7 @@ impl SslRef {
     /// [`SSL_set_tlsext_status_ocsp_resp`]: https://www.openssl.org/docs/man1.0.2/ssl/SSL_set_tlsext_status_type.html
     pub fn set_ocsp_status(&mut self, response: &[u8]) -> Result<(), ErrorStack> {
         unsafe {
-            assert!(response.len() <= c_int::max_value() as usize);
+            assert!(response.len() <= c_int::MAX as usize);
             let p = cvt_p(ffi::OPENSSL_malloc(response.len() as _))?;
             ptr::copy_nonoverlapping(response.as_ptr(), p as *mut u8, response.len());
             cvt(ffi::SSL_set_tlsext_status_ocsp_resp(
@@ -3947,7 +3947,7 @@ impl<S: Read + Write> SslStream<S> {
             return Ok(0);
         }
 
-        let len = usize::min(c_int::max_value() as usize, buf.len()) as c_int;
+        let len = usize::min(c_int::MAX as usize, buf.len()) as c_int;
         let ret = unsafe { ffi::SSL_read(self.ssl().as_ptr(), buf.as_mut_ptr().cast(), len) };
         if ret > 0 {
             Ok(ret as usize)
@@ -3969,7 +3969,7 @@ impl<S: Read + Write> SslStream<S> {
             return Ok(0);
         }
 
-        let len = usize::min(c_int::max_value() as usize, buf.len()) as c_int;
+        let len = usize::min(c_int::MAX as usize, buf.len()) as c_int;
         let ret = unsafe { ffi::SSL_write(self.ssl().as_ptr(), buf.as_ptr().cast(), len) };
         if ret > 0 {
             Ok(ret as usize)
diff --git a/boring/src/symm.rs b/boring/src/symm.rs
index 55a60999..6e230f0d 100644
--- a/boring/src/symm.rs
+++ b/boring/src/symm.rs
@@ -323,7 +323,7 @@ impl Crypter {
                 mode,
             ))?;
 
-            assert!(key.len() <= c_int::max_value() as usize);
+            assert!(key.len() <= c_int::MAX as usize);
             cvt(ffi::EVP_CIPHER_CTX_set_key_length(
                 crypter.ctx,
                 key.len() as c_uint,
@@ -333,7 +333,7 @@ impl Crypter {
             let iv = match (iv, t.iv_len()) {
                 (Some(iv), Some(len)) => {
                     if iv.len() != len {
-                        assert!(iv.len() <= c_int::max_value() as usize);
+                        assert!(iv.len() <= c_int::MAX as usize);
                         cvt(ffi::EVP_CIPHER_CTX_ctrl(
                             crypter.ctx,
                             ffi::EVP_CTRL_GCM_SET_IVLEN,
@@ -374,7 +374,7 @@ impl Crypter {
     /// When decrypting cipher text using an AEAD cipher, this must be called before `finalize`.
     pub fn set_tag(&mut self, tag: &[u8]) -> Result<(), ErrorStack> {
         unsafe {
-            assert!(tag.len() <= c_int::max_value() as usize);
+            assert!(tag.len() <= c_int::MAX as usize);
             // NB: this constant is actually more general than just GCM.
             cvt(ffi::EVP_CIPHER_CTX_ctrl(
                 self.ctx,
@@ -392,7 +392,7 @@ impl Crypter {
     /// to use a value different than the default 12 bytes.
     pub fn set_tag_len(&mut self, tag_len: usize) -> Result<(), ErrorStack> {
         unsafe {
-            assert!(tag_len <= c_int::max_value() as usize);
+            assert!(tag_len <= c_int::MAX as usize);
             // NB: this constant is actually more general than just GCM.
             cvt(ffi::EVP_CIPHER_CTX_ctrl(
                 self.ctx,
@@ -410,7 +410,7 @@ impl Crypter {
     /// CCM mode.
     pub fn set_data_len(&mut self, data_len: usize) -> Result<(), ErrorStack> {
         unsafe {
-            assert!(data_len <= c_int::max_value() as usize);
+            assert!(data_len <= c_int::MAX as usize);
             let mut len = 0;
             cvt(ffi::EVP_CipherUpdate(
                 self.ctx,
@@ -430,7 +430,7 @@ impl Crypter {
     /// `update`.
     pub fn aad_update(&mut self, input: &[u8]) -> Result<(), ErrorStack> {
         unsafe {
-            assert!(input.len() <= c_int::max_value() as usize);
+            assert!(input.len() <= c_int::MAX as usize);
             let mut len = 0;
             cvt(ffi::EVP_CipherUpdate(
                 self.ctx,
@@ -456,7 +456,7 @@ impl Crypter {
     /// Panics for block ciphers if `output.len() < input.len() + block_size`,
     /// where `block_size` is the block size of the cipher (see `Cipher::block_size`).
     ///
-    /// Panics if `output.len() > c_int::max_value()`.
+    /// Panics if `output.len() > c_int::MAX`.
     pub fn update(&mut self, input: &[u8], output: &mut [u8]) -> Result<usize, ErrorStack> {
         unsafe {
             let block_size = if self.block_size > 1 {
@@ -465,7 +465,7 @@ impl Crypter {
                 0
             };
             assert!(output.len() >= input.len() + block_size);
-            assert!(output.len() <= c_int::max_value() as usize);
+            assert!(output.len() <= c_int::MAX as usize);
             let mut outl = output.len() as c_int;
             let inl = input.len() as c_int;
 
@@ -497,7 +497,7 @@ impl Crypter {
             if self.block_size > 1 {
                 assert!(output.len() >= self.block_size);
             }
-            let mut outl = cmp::min(output.len(), c_int::max_value() as usize) as c_int;
+            let mut outl = cmp::min(output.len(), c_int::MAX as usize) as c_int;
 
             cvt(ffi::EVP_CipherFinal_ex(
                 self.ctx,
@@ -519,7 +519,7 @@ impl Crypter {
     /// bytes, for example.
     pub fn get_tag(&self, tag: &mut [u8]) -> Result<(), ErrorStack> {
         unsafe {
-            assert!(tag.len() <= c_int::max_value() as usize);
+            assert!(tag.len() <= c_int::MAX as usize);
             cvt(ffi::EVP_CIPHER_CTX_ctrl(
                 self.ctx,
                 ffi::EVP_CTRL_GCM_GET_TAG,
diff --git a/boring/src/x509/mod.rs b/boring/src/x509/mod.rs
index eca19db0..50750d66 100644
--- a/boring/src/x509/mod.rs
+++ b/boring/src/x509/mod.rs
@@ -898,7 +898,7 @@ impl X509NameBuilder {
     pub fn append_entry_by_text(&mut self, field: &str, value: &str) -> Result<(), ErrorStack> {
         unsafe {
             let field = CString::new(field).unwrap();
-            assert!(value.len() <= ValueLen::max_value() as usize);
+            assert!(value.len() <= ValueLen::MAX as usize);
             cvt(ffi::X509_NAME_add_entry_by_txt(
                 self.0.as_ptr(),
                 field.as_ptr() as *mut _,
@@ -925,7 +925,7 @@ impl X509NameBuilder {
     ) -> Result<(), ErrorStack> {
         unsafe {
             let field = CString::new(field).unwrap();
-            assert!(value.len() <= ValueLen::max_value() as usize);
+            assert!(value.len() <= ValueLen::MAX as usize);
             cvt(ffi::X509_NAME_add_entry_by_txt(
                 self.0.as_ptr(),
                 field.as_ptr() as *mut _,
@@ -946,7 +946,7 @@ impl X509NameBuilder {
     /// [`X509_NAME_add_entry_by_NID`]: https://www.openssl.org/docs/man1.1.0/crypto/X509_NAME_add_entry_by_NID.html
     pub fn append_entry_by_nid(&mut self, field: Nid, value: &str) -> Result<(), ErrorStack> {
         unsafe {
-            assert!(value.len() <= ValueLen::max_value() as usize);
+            assert!(value.len() <= ValueLen::MAX as usize);
             cvt(ffi::X509_NAME_add_entry_by_NID(
                 self.0.as_ptr(),
                 field.as_raw(),
@@ -972,7 +972,7 @@ impl X509NameBuilder {
         ty: Asn1Type,
     ) -> Result<(), ErrorStack> {
         unsafe {
-            assert!(value.len() <= ValueLen::max_value() as usize);
+            assert!(value.len() <= ValueLen::MAX as usize);
             cvt(ffi::X509_NAME_add_entry_by_NID(
                 self.0.as_ptr(),
                 field.as_raw(),