diff --git a/dash/Cargo.toml b/dash/Cargo.toml
index a69ed823a..84cf907d6 100644
--- a/dash/Cargo.toml
+++ b/dash/Cargo.toml
@@ -40,8 +40,8 @@ test-utils = []
 # The no-std feature doesn't disable std - you need to turn off the std feature for that by disabling default.
 # Instead no-std enables additional features required for this crate to be usable without std.
 # As a result, both can be enabled without conflict.
-std = ["secp256k1/std", "dashcore_hashes/std", "bech32/std", "internals/std"]
-no-std = ["core2", "dashcore_hashes/alloc", "dashcore_hashes/core2", "secp256k1/alloc"]
+std = ["secp256k1/std", "bech32/std", "internals/std"]
+no-std = ["core2", "secp256k1/alloc"]
 
 [package.metadata.docs.rs]
 all-features = true
@@ -50,7 +50,7 @@ rustdoc-args = ["--cfg", "docsrs"]
 [dependencies]
 internals = { path = "../internals", package = "dashcore-private" }
 bech32 = { version = "0.9.1", default-features = false }
-dashcore_hashes = { path = "../hashes", default-features = false }
+dashcore_hashes = { path = "../hashes" }
 secp256k1 = { default-features = false, features = ["hashes"], version= "0.30.0" }
 core2 = { version = "0.4.0", optional = true, features = ["alloc"], default-features = false }
 rustversion = { version="1.0.20"}
diff --git a/hashes/Cargo.toml b/hashes/Cargo.toml
index 77287370e..1fc5ceb9f 100644
--- a/hashes/Cargo.toml
+++ b/hashes/Cargo.toml
@@ -13,9 +13,7 @@ edition = "2021"
 exclude = ["tests", "contrib"]
 
 [features]
-default = ["std"]
-std = ["alloc", "internals/std"]
-alloc = ["internals/alloc"]
+default = ["internals/alloc"]
 schemars = ["actual-schemars"]
 serde-std = ["serde/std"]
 x11 = ["rs-x11-hash"]
@@ -27,7 +25,6 @@ rustdoc-args = ["--cfg", "docsrs"]
 [dependencies]
 internals = { path = "../internals", package = "dashcore-private" }
 
-core2 = { version = "0.4.0", default-features = false, optional = true }
 # Only enable this if you explicitly do not want to use "std", otherwise enable "serde-std".
 serde = { version = "1.0.219", default-features = false, optional = true }
 # Do NOT use this as a feature! Use the `schemars` feature instead. Can only be used with "std" enabled.
diff --git a/hashes/src/error.rs b/hashes/src/error.rs
index 251258cfa..2614d26b6 100644
--- a/hashes/src/error.rs
+++ b/hashes/src/error.rs
@@ -36,7 +36,6 @@ impl fmt::Display for Error {
     }
 }
 
-#[cfg(feature = "std")]
 impl std::error::Error for Error {
     fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
         use self::Error::*;
diff --git a/hashes/src/hash160.rs b/hashes/src/hash160.rs
index 997c44800..3262026d2 100644
--- a/hashes/src/hash160.rs
+++ b/hashes/src/hash160.rs
@@ -49,12 +49,10 @@ fn from_engine(e: HashEngine) -> Hash {
 #[cfg(test)]
 mod tests {
     #[test]
-    #[cfg(feature = "alloc")]
     fn test() {
         use crate::{hash160, Hash, HashEngine};
 
         #[derive(Clone)]
-        #[cfg(feature = "alloc")]
         struct Test {
             input: Vec<u8>,
             output: Vec<u8>,
diff --git a/hashes/src/hash_x11.rs b/hashes/src/hash_x11.rs
index 57a9675be..bedeb9670 100644
--- a/hashes/src/hash_x11.rs
+++ b/hashes/src/hash_x11.rs
@@ -21,16 +21,9 @@
 use core::ops::Index;
 use core::slice::SliceIndex;
 use core::str;
-#[cfg(feature = "std")]
 use std::io;
-#[cfg(feature = "std")]
 use std::vec::Vec;
 
-#[cfg(all(feature = "core2", not(feature = "std")))]
-use core2::io;
-
-#[cfg(all(feature = "alloc", not(feature = "std")))]
-use crate::alloc::vec::Vec;
 use crate::{hex, Error, HashEngine as _};
 
 crate::internal_macros::hash_type! {
diff --git a/hashes/src/hex.rs b/hashes/src/hex.rs
index f5b648b44..62fa9e08c 100644
--- a/hashes/src/hex.rs
+++ b/hashes/src/hex.rs
@@ -16,15 +16,8 @@
 //!
 
 use core::{fmt, str};
-#[cfg(feature = "std")]
 use std::io;
 
-#[cfg(all(feature = "core2", not(feature = "std")))]
-use core2::io;
-
-#[cfg(all(feature = "alloc", not(feature = "std")))]
-use crate::alloc::vec::Vec;
-
 /// Hex decoding error.
 #[derive(Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
 pub enum Error {
@@ -48,7 +41,6 @@ impl fmt::Display for Error {
     }
 }
 
-#[cfg(feature = "std")]
 impl std::error::Error for Error {
     fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
         use self::Error::*;
@@ -119,7 +111,6 @@ impl<'a> Iterator for HexIterator<'a> {
     }
 }
 
-#[cfg(any(feature = "std", feature = "core2"))]
 impl<'a> io::Read for HexIterator<'a> {
     fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
         let mut bytes_read = 0usize;
@@ -146,7 +137,6 @@ impl<'a> DoubleEndedIterator for HexIterator<'a> {
 
 impl<'a> ExactSizeIterator for HexIterator<'a> {}
 
-#[cfg(any(test, feature = "std", feature = "alloc"))]
 impl FromHex for Vec<u8> {
     fn from_byte_iter<I>(iter: I) -> Result<Self, Error>
     where
@@ -200,7 +190,6 @@ impl_fromhex_array!(384);
 impl_fromhex_array!(512);
 
 #[cfg(test)]
-#[cfg(feature = "alloc")]
 mod tests {
     use internals::hex::exts::DisplayHex;
 
diff --git a/hashes/src/hmac.rs b/hashes/src/hmac.rs
index 46b374de9..a01e77f95 100644
--- a/hashes/src/hmac.rs
+++ b/hashes/src/hmac.rs
@@ -244,7 +244,6 @@ impl<'de, T: Hash + Deserialize<'de>> Deserialize<'de> for Hmac<T> {
 #[cfg(test)]
 mod tests {
     #[test]
-    #[cfg(feature = "alloc")]
     fn test() {
         use crate::{sha256, Hash, HashEngine, Hmac, HmacEngine};
 
diff --git a/hashes/src/impls.rs b/hashes/src/impls.rs
index c63605e57..15e61e5b8 100644
--- a/hashes/src/impls.rs
+++ b/hashes/src/impls.rs
@@ -12,17 +12,8 @@
 // If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
 //
 
-//! `std` / `core2` Impls.
-//!
-//! Implementations of traits defined in `std` / `core2` and not in `core`.
-//!
-
-#[cfg(feature = "std")]
 use std::io;
 
-#[cfg(not(feature = "std"))]
-use core2::io;
-
 use crate::{hmac, ripemd160, sha1, sha256, sha512, siphash24, HashEngine};
 
 impl io::Write for sha1::HashEngine {
diff --git a/hashes/src/lib.rs b/hashes/src/lib.rs
index 233175eb2..be5153cdc 100644
--- a/hashes/src/lib.rs
+++ b/hashes/src/lib.rs
@@ -88,16 +88,9 @@
 // that don't do anything but annoy us and cant actually ever be resolved.
 #![allow(bare_trait_objects)]
 #![allow(ellipsis_inclusive_range_patterns)]
-#![cfg_attr(all(not(test), not(feature = "std")), no_std)]
 // Instead of littering the codebase for non-fuzzing code just globally allow.
 #![cfg_attr(fuzzing, allow(dead_code, unused_imports))]
 
-#[cfg(all(feature = "alloc", not(feature = "std")))]
-extern crate alloc;
-#[cfg(any(test, feature = "std"))]
-extern crate core;
-#[cfg(feature = "core2")]
-extern crate core2;
 #[cfg(feature = "serde")]
 pub extern crate serde;
 #[cfg(all(test, feature = "serde"))]
@@ -129,7 +122,6 @@ pub mod hash160;
 pub mod hash_x11;
 pub mod hex;
 pub mod hmac;
-#[cfg(any(feature = "std", feature = "core2"))]
 mod impls;
 pub mod ripemd160;
 pub mod sha1;
diff --git a/hashes/src/ripemd160.rs b/hashes/src/ripemd160.rs
index 87551058e..be9fbca67 100644
--- a/hashes/src/ripemd160.rs
+++ b/hashes/src/ripemd160.rs
@@ -405,7 +405,6 @@ impl HashEngine {
 #[cfg(test)]
 mod tests {
     #[test]
-    #[cfg(feature = "alloc")]
     fn test() {
         use std::convert::TryFrom;
 
diff --git a/hashes/src/sha1.rs b/hashes/src/sha1.rs
index e77d69432..9d060de42 100644
--- a/hashes/src/sha1.rs
+++ b/hashes/src/sha1.rs
@@ -144,7 +144,6 @@ impl HashEngine {
 #[cfg(test)]
 mod tests {
     #[test]
-    #[cfg(feature = "alloc")]
     fn test() {
         use crate::{sha1, Hash, HashEngine};
 
diff --git a/hashes/src/sha256.rs b/hashes/src/sha256.rs
index 7e9e83704..51ce18397 100644
--- a/hashes/src/sha256.rs
+++ b/hashes/src/sha256.rs
@@ -520,7 +520,6 @@ mod tests {
     use crate::{sha256, Hash, HashEngine};
 
     #[test]
-    #[cfg(feature = "alloc")]
     fn test() {
         #[derive(Clone)]
         struct Test {
diff --git a/hashes/src/sha256d.rs b/hashes/src/sha256d.rs
index 611cea5e4..8bbd5755f 100644
--- a/hashes/src/sha256d.rs
+++ b/hashes/src/sha256d.rs
@@ -44,7 +44,6 @@ fn from_engine(e: sha256::HashEngine) -> Hash {
 #[cfg(test)]
 mod tests {
     #[test]
-    #[cfg(feature = "alloc")]
     fn test() {
         use crate::{sha256, sha256d, Hash, HashEngine};
 
diff --git a/hashes/src/sha256t.rs b/hashes/src/sha256t.rs
index e5a0dba69..d2e1b0c06 100644
--- a/hashes/src/sha256t.rs
+++ b/hashes/src/sha256t.rs
@@ -184,7 +184,6 @@ macro_rules! sha256t_hash_newtype_tag_constructor {
 
 #[cfg(test)]
 mod tests {
-    #[cfg(feature = "alloc")]
     use crate::Hash;
     use crate::{sha256, sha256t};
 
@@ -206,7 +205,6 @@ mod tests {
     }
 
     /// A hash tagged with `$name`.
-    #[cfg(feature = "alloc")]
     pub type TestHash = sha256t::Hash<TestHashTag>;
 
     sha256t_hash_newtype! {
@@ -219,7 +217,6 @@ mod tests {
     }
 
     #[test]
-    #[cfg(feature = "alloc")]
     fn test_sha256t() {
         assert_eq!(
             TestHash::hash(&[0]).to_string(),
diff --git a/hashes/src/sha512.rs b/hashes/src/sha512.rs
index bebc026d6..5f1a79ff2 100644
--- a/hashes/src/sha512.rs
+++ b/hashes/src/sha512.rs
@@ -271,7 +271,6 @@ impl HashEngine {
 #[cfg(test)]
 mod tests {
     #[test]
-    #[cfg(feature = "alloc")]
     fn test() {
         use crate::{sha512, Hash, HashEngine};
 
diff --git a/hashes/src/sha512_256.rs b/hashes/src/sha512_256.rs
index 2d24ffbb9..3d7343f36 100644
--- a/hashes/src/sha512_256.rs
+++ b/hashes/src/sha512_256.rs
@@ -88,7 +88,6 @@ fn from_engine(e: HashEngine) -> Hash {
 #[cfg(test)]
 mod tests {
     #[test]
-    #[cfg(feature = "alloc")]
     fn test() {
         use crate::{sha512_256, Hash, HashEngine};
 
diff --git a/key-wallet-manager/Cargo.toml b/key-wallet-manager/Cargo.toml
index 78e7bbe6c..aa544b149 100644
--- a/key-wallet-manager/Cargo.toml
+++ b/key-wallet-manager/Cargo.toml
@@ -10,7 +10,7 @@ license = "CC0-1.0"
 
 [features]
 default = ["std", "bincode"]
-std = ["key-wallet/std", "dashcore/std", "dashcore_hashes/std", "secp256k1/std"]
+std = ["key-wallet/std", "dashcore/std", "secp256k1/std"]
 serde = ["dep:serde", "key-wallet/serde", "dashcore/serde"]
 getrandom = ["key-wallet/getrandom"]
 bincode = ["dep:bincode", "key-wallet/bincode"]
@@ -19,7 +19,7 @@ test-utils = []
 [dependencies]
 key-wallet = { path = "../key-wallet", default-features = false }
 dashcore = { path = "../dash", default-features = false }
-dashcore_hashes = { path = "../hashes", default-features = false }
+dashcore_hashes = { path = "../hashes" }
 secp256k1 = { version = "0.30.0", default-features = false, features = ["recovery"] }
 serde = { version = "1.0", default-features = false, features = ["derive"], optional = true }
 async-trait = "0.1"
diff --git a/key-wallet/Cargo.toml b/key-wallet/Cargo.toml
index fb65893f9..80c633a91 100644
--- a/key-wallet/Cargo.toml
+++ b/key-wallet/Cargo.toml
@@ -10,7 +10,7 @@ license = "CC0-1.0"
 
 [features]
 default = ["std"]
-std = ["dashcore_hashes/std", "secp256k1/std", "bip39/std", "getrandom", "rand"]
+std = ["secp256k1/std", "bip39/std", "getrandom", "rand"]
 serde = ["dep:serde", "dep:serde_json", "dashcore_hashes/serde", "secp256k1/serde", "dashcore/serde"]
 bincode = ["serde", "dep:bincode", "dep:bincode_derive", "dashcore_hashes/bincode", "dashcore/bincode"]
 bip38 = ["scrypt", "aes", "bs58", "rand"]
@@ -20,7 +20,7 @@ test-utils = ["dashcore/test-utils"]
 
 [dependencies]
 internals = { path = "../internals", package = "dashcore-private" }
-dashcore_hashes = { path = "../hashes", default-features = false }
+dashcore_hashes = { path = "../hashes" }
 dashcore = { path="../dash" }
 secp256k1 = { version = "0.30.0", default-features = false, features = ["hashes", "recovery"] }
 bip39 = { version = "2.2.0", default-features = false, features = ["chinese-simplified", "chinese-traditional", "czech", "french", "italian", "japanese", "korean", "portuguese", "spanish", "zeroize"] }