diff --git a/belt-hash/src/lib.rs b/belt-hash/src/lib.rs
index 7207eb11..874b490e 100644
--- a/belt-hash/src/lib.rs
+++ b/belt-hash/src/lib.rs
@@ -135,7 +135,6 @@ impl fmt::Debug for BeltHashCore {
 }
 
 #[cfg(feature = "oid")]
-#[cfg_attr(docsrs, doc(cfg(feature = "oid")))]
 impl AssociatedOid for BeltHashCore {
     const OID: ObjectIdentifier = ObjectIdentifier::new_unwrap("1.2.112.0.2.0.34.101.31.81");
 }
diff --git a/md2/src/lib.rs b/md2/src/lib.rs
index 9313baca..45685a5f 100644
--- a/md2/src/lib.rs
+++ b/md2/src/lib.rs
@@ -136,7 +136,6 @@ impl fmt::Debug for Md2Core {
 }
 
 #[cfg(feature = "oid")]
-#[cfg_attr(docsrs, doc(cfg(feature = "oid")))]
 impl AssociatedOid for Md2Core {
     const OID: ObjectIdentifier = ObjectIdentifier::new_unwrap("1.2.840.113549.2.2");
 }
diff --git a/md4/src/lib.rs b/md4/src/lib.rs
index f41b891a..e4f4ee5f 100644
--- a/md4/src/lib.rs
+++ b/md4/src/lib.rs
@@ -119,7 +119,6 @@ impl fmt::Debug for Md4Core {
 }
 
 #[cfg(feature = "oid")]
-#[cfg_attr(docsrs, doc(cfg(feature = "oid")))]
 impl AssociatedOid for Md4Core {
     const OID: ObjectIdentifier = ObjectIdentifier::new_unwrap("1.2.840.113549.2.4");
 }
diff --git a/md5/src/lib.rs b/md5/src/lib.rs
index 223db46e..9803578c 100644
--- a/md5/src/lib.rs
+++ b/md5/src/lib.rs
@@ -111,7 +111,6 @@ impl fmt::Debug for Md5Core {
 }
 
 #[cfg(feature = "oid")]
-#[cfg_attr(docsrs, doc(cfg(feature = "oid")))]
 impl AssociatedOid for Md5Core {
     const OID: ObjectIdentifier = ObjectIdentifier::new_unwrap("1.2.840.113549.2.5");
 }
diff --git a/ripemd/src/lib.rs b/ripemd/src/lib.rs
index 24687616..90a10456 100644
--- a/ripemd/src/lib.rs
+++ b/ripemd/src/lib.rs
@@ -173,7 +173,6 @@ impl_ripemd!(Ripemd256Core, Ripemd256, c256, "256", "RIPEMD-256", U32);
 impl_ripemd!(Ripemd320Core, Ripemd320, c320, "320", "RIPEMD-320", U40);
 
 #[cfg(feature = "oid")]
-#[cfg_attr(docsrs, doc(cfg(feature = "oid")))]
 impl AssociatedOid for Ripemd128Core {
     /// The OID used for the RIPEMD-160. There are two OIDs defined. The Teletrust one (which is
     /// used by almost anybody, including BouncyCastle, OpenSSL, GnuTLS, etc. and the ISO one
@@ -182,7 +181,6 @@ impl AssociatedOid for Ripemd128Core {
 }
 
 #[cfg(feature = "oid")]
-#[cfg_attr(docsrs, doc(cfg(feature = "oid")))]
 impl AssociatedOid for Ripemd160Core {
     /// The OID used for the RIPEMD-160. There are two OIDs defined. The Teletrust one (which is
     /// used by almost anybody, including BouncyCastle, OpenSSL, GnuTLS, etc. and the ISO one
@@ -191,7 +189,6 @@ impl AssociatedOid for Ripemd160Core {
 }
 
 #[cfg(feature = "oid")]
-#[cfg_attr(docsrs, doc(cfg(feature = "oid")))]
 impl AssociatedOid for Ripemd256Core {
     const OID: ObjectIdentifier = ObjectIdentifier::new_unwrap("1.3.36.3.2.3");
 }
diff --git a/sha1/src/lib.rs b/sha1/src/lib.rs
index 5361f604..cbf5fbee 100644
--- a/sha1/src/lib.rs
+++ b/sha1/src/lib.rs
@@ -114,7 +114,6 @@ impl fmt::Debug for Sha1Core {
 }
 
 #[cfg(feature = "oid")]
-#[cfg_attr(docsrs, doc(cfg(feature = "oid")))]
 impl AssociatedOid for Sha1Core {
     const OID: ObjectIdentifier = ObjectIdentifier::new_unwrap("1.3.14.3.2.26");
 }
diff --git a/sha2/src/sha256.rs b/sha2/src/sha256.rs
index 5d009ed7..4e084902 100644
--- a/sha2/src/sha256.rs
+++ b/sha2/src/sha256.rs
@@ -45,7 +45,6 @@ fn to_u32s(block: &[u8; 64]) -> [u32; 16] {
 ///
 /// This is a low-level "hazmat" API which provides direct access to the core
 /// functionality of SHA-256.
-#[cfg_attr(docsrs, doc(cfg(feature = "compress")))]
 pub fn compress256(state: &mut [u32; 8], blocks: &[[u8; 64]]) {
     compress(state, blocks)
 }
diff --git a/sha2/src/sha512.rs b/sha2/src/sha512.rs
index f0daee1e..08e802fc 100644
--- a/sha2/src/sha512.rs
+++ b/sha2/src/sha512.rs
@@ -45,7 +45,6 @@ fn to_u64s(block: &[u8; 128]) -> [u64; 16] {
 ///
 /// This is a low-level "hazmat" API which provides direct access to the core
 /// functionality of SHA-512.
-#[cfg_attr(docsrs, doc(cfg(feature = "compress")))]
 pub fn compress512(state: &mut [u64; 8], blocks: &[[u8; 128]]) {
     compress(state, blocks)
 }
diff --git a/sha3/src/macros.rs b/sha3/src/macros.rs
index a5ee3e43..a91d09ca 100644
--- a/sha3/src/macros.rs
+++ b/sha3/src/macros.rs
@@ -133,7 +133,6 @@ macro_rules! impl_sha3 {
         impl_sha3!($name, $full_name, $output_size, $rate, $pad, $alg_name);
 
         #[cfg(feature = "oid")]
-        #[cfg_attr(docsrs, doc(cfg(feature = "oid")))]
         impl AssociatedOid for $name {
             const OID: ObjectIdentifier = ObjectIdentifier::new_unwrap($oid);
         }
@@ -289,7 +288,6 @@ macro_rules! impl_shake {
         );
 
         #[cfg(feature = "oid")]
-        #[cfg_attr(docsrs, doc(cfg(feature = "oid")))]
         impl AssociatedOid for $name {
             const OID: ObjectIdentifier = ObjectIdentifier::new_unwrap($oid);
         }
@@ -443,7 +441,6 @@ macro_rules! impl_turbo_shake {
         impl_turbo_shake!($name, $full_name, $reader, $reader_full, $rate, $alg_name);
 
         #[cfg(feature = "oid")]
-        #[cfg_attr(docsrs, doc(cfg(feature = "oid")))]
         impl AssociatedOid for $name {
             const OID: ObjectIdentifier = ObjectIdentifier::new_unwrap($oid);
         }