diff --git a/Cargo.lock b/Cargo.lock
index c51fef2de..a475ecbb4 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2195,7 +2195,7 @@ dependencies = [
  "solana-budget-program 0.15.0",
  "solana-client 0.15.0",
  "solana-drone 0.15.0",
- "solana-ed25519-dalek 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "solana-ed25519-dalek 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "solana-kvstore 0.15.0",
  "solana-logger 0.15.0",
  "solana-metrics 0.15.0",
@@ -2387,7 +2387,7 @@ dependencies = [
 
 [[package]]
 name = "solana-ed25519-dalek"
-version = "0.1.0"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "clear_on_drop 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2643,7 +2643,7 @@ dependencies = [
  "serde_derive 1.0.91 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.39 (registry+https://github.com/rust-lang/crates.io-index)",
  "sha2 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "solana-ed25519-dalek 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "solana-ed25519-dalek 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "untrusted 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -3636,7 +3636,7 @@ dependencies = [
 "checksum slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "c111b5bd5695e56cffe5129854aa230b39c93a305372fdbb2668ca2394eea9f8"
 "checksum smallvec 0.6.9 (registry+https://github.com/rust-lang/crates.io-index)" = "c4488ae950c49d403731982257768f48fada354a5203fe81f9bb6f43ca9002be"
 "checksum socket2 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)" = "4e626972d3593207547f14bf5fc9efa4d0e7283deb73fef1dff313dae9ab8878"
-"checksum solana-ed25519-dalek 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5a1bcc2cff3ecfee3ff892aef944f46378e84598c5017591d45f50d5a5c2cae7"
+"checksum solana-ed25519-dalek 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1c21f9d5aa62959872194dfd086feb4e8efec1c2589d27e6a0339904759e99fc"
 "checksum solana_rbpf 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)" = "ad37128dd7524e96cce18dec21be28fa369785842fcedb530b22df3a94b5fe5c"
 "checksum stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dba1a27d3efae4351c8051072d619e3ade2820635c3958d826bfea39d59b54c8"
 "checksum string 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "b639411d0b9c738748b5397d5ceba08e648f4f1992231aa859af1a017f31f60b"
diff --git a/core/Cargo.toml b/core/Cargo.toml
index c584889fd..df842ab3d 100644
--- a/core/Cargo.toml
+++ b/core/Cargo.toml
@@ -50,7 +50,7 @@ solana-budget-api = { path = "../programs/budget_api", version = "0.15.0"  }
 solana-budget-program = { path = "../programs/budget_program", version = "0.15.0"  }
 solana-client = { path = "../client", version = "0.15.0"  }
 solana-drone = { path = "../drone", version = "0.15.0"  }
-solana-ed25519-dalek = "0.1.0"
+solana-ed25519-dalek = "0.2.0"
 solana-kvstore = { path = "../kvstore", version = "0.15.0" , optional = true  }
 solana-logger = { path = "../logger", version = "0.15.0"  }
 solana-metrics = { path = "../metrics", version = "0.15.0"  }
diff --git a/sdk/Cargo.toml b/sdk/Cargo.toml
index db9d81f80..270132326 100644
--- a/sdk/Cargo.toml
+++ b/sdk/Cargo.toml
@@ -25,5 +25,5 @@ sha2 = "0.8.0"
 serde = "1.0.91"
 serde_derive = "1.0.91"
 serde_json = "1.0.39"
-solana-ed25519-dalek = "0.1.0"
+solana-ed25519-dalek = "0.2.0"
 untrusted = "0.6.2"
diff --git a/sdk/src/signature.rs b/sdk/src/signature.rs
index c4680ef44..996653aef 100644
--- a/sdk/src/signature.rs
+++ b/sdk/src/signature.rs
@@ -5,51 +5,15 @@ use bs58;
 use generic_array::typenum::U64;
 use generic_array::GenericArray;
 use rand::rngs::OsRng;
-use rand::{CryptoRng, Rng};
 use serde_json;
 use solana_ed25519_dalek as ed25519_dalek;
 use std::error;
 use std::fmt;
 use std::fs::{self, File};
 use std::io::Write;
-use std::ops::Deref;
 use std::path::Path;
 
-// --BEGIN
-// the below can go away if this lands:
-//  https://github.com/dalek-cryptography/ed25519-dalek/pull/82
-#[derive(Debug)]
-pub struct Keypair(ed25519_dalek::Keypair);
-impl PartialEq for Keypair {
-    fn eq(&self, other: &Self) -> bool {
-        self.pubkey() == other.pubkey()
-    }
-}
-impl Deref for Keypair {
-    type Target = ed25519_dalek::Keypair;
-    fn deref(&self) -> &Self::Target {
-        &self.0
-    }
-}
-impl From<ed25519_dalek::Keypair> for Keypair {
-    fn from(keypair: ed25519_dalek::Keypair) -> Self {
-        Keypair(keypair)
-    }
-}
-impl Keypair {
-    pub fn from_bytes(bytes: &[u8]) -> Result<Self, ed25519_dalek::SignatureError> {
-        ed25519_dalek::Keypair::from_bytes(bytes).map(std::convert::Into::into)
-    }
-    pub fn generate<R>(rng: &mut R) -> Self
-    where
-        R: CryptoRng + Rng,
-    {
-        ed25519_dalek::Keypair::generate(rng).into()
-    }
-}
-// the above can go away if this lands:
-//  https://github.com/dalek-cryptography/ed25519-dalek/pull/82
-// --END
+pub type Keypair = ed25519_dalek::Keypair;
 
 #[derive(Serialize, Deserialize, Clone, Copy, Default, Eq, PartialEq, Ord, PartialOrd, Hash)]
 pub struct Signature(GenericArray<u8, U64>);