diff --git a/Cargo.toml b/Cargo.toml
index d37c74aec..a33a6913d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,7 +19,6 @@ foldhash = { version = "0.1.2", default-features = false, optional = true }
 # For external trait impls
 rayon = { version = "1.0", optional = true }
 serde = { version = "1.0.25", default-features = false, optional = true }
-borsh = { version = "1.5.0", default-features = false, optional = true, features = ["derive"]}
 
 # When built as part of libstd
 core = { version = "1.0.0", optional = true, package = "rustc-std-workspace-core" }
diff --git a/README.md b/README.md
index 1b1aafb64..cb6dc2695 100644
--- a/README.md
+++ b/README.md
@@ -56,7 +56,6 @@ This crate has the following Cargo features:
 
 - `nightly`: Enables nightly-only features including: `#[may_dangle]`.
 - `serde`: Enables serde serialization support.
-- `borsh`: Enables borsh serialization support.
 - `rayon`: Enables rayon parallel iterator support.
 - `equivalent`: Allows comparisons to be customized with the `Equivalent` trait. (enabled by default)
 - `raw-entry`: Enables access to the deprecated `RawEntry` API.
diff --git a/src/external_trait_impls/borsh/hash_map.rs b/src/external_trait_impls/borsh/hash_map.rs
deleted file mode 100644
index 8991affbc..000000000
--- a/src/external_trait_impls/borsh/hash_map.rs
+++ /dev/null
@@ -1,78 +0,0 @@
-use crate::HashMap;
-
-use borsh::{
-    io::{Read, Result, Write},
-    BorshDeserialize, BorshSerialize,
-};
-
-impl<K: BorshSerialize, V: BorshSerialize, S: BorshSerialize> BorshSerialize for HashMap<K, V, S> {
-    fn serialize<W: Write>(&self, writer: &mut W) -> Result<()> {
-        // assuming hash may have some seed,
-        // as borsh is supposed by default to be deterministic, need to write it down
-        // if allocator is compile time, than one can just impl wrapper with zero bytes serde of it
-        self.hash_builder.serialize(writer)?;
-        // considering A stateless
-        self.len().serialize(writer)?;
-        for kv in self.iter() {
-            kv.serialize(writer)?;
-        }
-        Ok(())
-    }
-}
-
-impl<
-        K: BorshDeserialize + core::hash::Hash + Eq,
-        V: BorshDeserialize,
-        S: BorshDeserialize + core::hash::BuildHasher,
-    > BorshDeserialize for HashMap<K, V, S>
-{
-    fn deserialize_reader<R: Read>(reader: &mut R) -> Result<Self> {
-        let hash_builder = S::deserialize_reader(reader)?;
-        let len = usize::deserialize_reader(reader)?;
-        let mut map = HashMap::with_capacity_and_hasher(len, hash_builder);
-        for _ in 0..len {
-            let (k, v) = <(K, V)>::deserialize_reader(reader)?;
-            // can use raw api here to init from memory, so can do it other time
-            map.insert(k, v);
-        }
-        Ok(map)
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use borsh::{BorshDeserialize, BorshSerialize};
-    use std::vec::Vec;
-
-    #[derive(Default, BorshDeserialize, BorshSerialize, Clone)]
-    struct NoHash;
-
-    impl core::hash::BuildHasher for NoHash {
-        type Hasher = NoHash;
-        fn build_hasher(&self) -> NoHash {
-            Self
-        }
-    }
-
-    impl core::hash::Hasher for NoHash {
-        fn finish(&self) -> u64 {
-            42
-        }
-
-        fn write(&mut self, _bytes: &[u8]) {}
-    }
-
-    #[test]
-    fn encdec() {
-        let mut map = crate::HashMap::<_, _, NoHash>::default();
-        map.insert(1, 2);
-        map.insert(3, 4);
-        let mut buf = Vec::new();
-        map.serialize(&mut buf).unwrap();
-        let original = map.clone();
-        map = crate::HashMap::<_, _, NoHash>::deserialize_reader(&mut &buf[..]).unwrap();
-        assert_eq!(original[&1], map[&1]);
-        assert_eq!(original[&3], map[&3]);
-        assert_eq!(original.len(), map.len());
-    }
-}
diff --git a/src/external_trait_impls/borsh/mod.rs b/src/external_trait_impls/borsh/mod.rs
deleted file mode 100644
index 841e4b1a2..000000000
--- a/src/external_trait_impls/borsh/mod.rs
+++ /dev/null
@@ -1 +0,0 @@
-mod hash_map;
diff --git a/src/external_trait_impls/mod.rs b/src/external_trait_impls/mod.rs
index bca8f9770..ef497836c 100644
--- a/src/external_trait_impls/mod.rs
+++ b/src/external_trait_impls/mod.rs
@@ -1,5 +1,3 @@
-#[cfg(feature = "borsh")]
-mod borsh;
 #[cfg(feature = "rayon")]
 pub(crate) mod rayon;
 #[cfg(feature = "serde")]