diff --git a/Cargo.lock b/Cargo.lock
index c1e005f4..804b8cd2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -331,8 +331,7 @@ dependencies = [
 [[package]]
 name = "ecdsa"
 version = "0.16.0-pre.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fcd6964e28e4802aed67abfaddd5e5430f368c54cc3e498d2a6a8444e5361fe5"
+source = "git+https://github.com/RustCrypto/signatures.git#4e2b0b2cfcfaef61a1e8851080cf640313a6e516"
 dependencies = [
  "der",
  "elliptic-curve",
@@ -350,8 +349,7 @@ checksum = "90e5c1c8368803113bf0c9584fc495a58b86dc8a29edbf8fe877d21d9507e797"
 [[package]]
 name = "elliptic-curve"
 version = "0.13.0-pre.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a583fbbbfde04e0ef9c8b84c3bf8e504155a1642f91bf5cc2d6e7355cfb6ac4f"
+source = "git+https://github.com/RustCrypto/traits.git#cd2ecd3bff18ad4c162ac41f275f405537dc439c"
 dependencies = [
  "base16ct",
  "base64ct",
@@ -915,8 +913,7 @@ dependencies = [
 [[package]]
 name = "rfc6979"
 version = "0.4.0-pre.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1b3595c18d975a2c373afdb4f8d17016589e65f9d84305c1c36fc55272def0bd"
+source = "git+https://github.com/RustCrypto/signatures.git#4e2b0b2cfcfaef61a1e8851080cf640313a6e516"
 dependencies = [
  "hmac",
  "subtle",
diff --git a/Cargo.toml b/Cargo.toml
index 5b42a8e2..49eebc22 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,4 +12,8 @@ members = [
 ]
 
 [profile.dev]
-opt-level = 2
\ No newline at end of file
+opt-level = 2
+
+[patch.crates-io]
+ecdsa = { git = "https://github.com/RustCrypto/signatures.git" }
+elliptic-curve = { git = "https://github.com/RustCrypto/traits.git" }
\ No newline at end of file
diff --git a/k256/src/arithmetic/affine.rs b/k256/src/arithmetic/affine.rs
index 83c93e9a..2fb1e888 100644
--- a/k256/src/arithmetic/affine.rs
+++ b/k256/src/arithmetic/affine.rs
@@ -7,7 +7,7 @@ use crate::{CompressedPoint, EncodedPoint, FieldBytes, PublicKey, Scalar, Secp25
 use core::ops::{Mul, Neg};
 use elliptic_curve::{
     group::{prime::PrimeCurveAffine, GroupEncoding},
-    point::{AffineXCoordinate, AffineYIsOdd, DecompactPoint, DecompressPoint},
+    point::{AffineCoordinates, DecompactPoint, DecompressPoint},
     sec1::{self, FromEncodedPoint, ToEncodedPoint},
     subtle::{Choice, ConditionallySelectable, ConstantTimeEq, CtOption},
     zeroize::DefaultIsZeroes,
@@ -107,15 +107,13 @@ impl PrimeCurveAffine for AffinePoint {
     }
 }
 
-impl AffineXCoordinate for AffinePoint {
+impl AffineCoordinates for AffinePoint {
     type FieldRepr = FieldBytes;
 
     fn x(&self) -> FieldBytes {
         self.x.to_bytes()
     }
-}
 
-impl AffineYIsOdd for AffinePoint {
     fn y_is_odd(&self) -> Choice {
         self.y.normalize().is_odd()
     }
diff --git a/primeorder/src/affine.rs b/primeorder/src/affine.rs
index b821ab6e..4391ac42 100644
--- a/primeorder/src/affine.rs
+++ b/primeorder/src/affine.rs
@@ -11,7 +11,7 @@ use elliptic_curve::{
     ff::{Field, PrimeField},
     generic_array::ArrayLength,
     group::{prime::PrimeCurveAffine, GroupEncoding},
-    point::{AffineXCoordinate, AffineYIsOdd, DecompactPoint, DecompressPoint, Double},
+    point::{AffineCoordinates, DecompactPoint, DecompressPoint, Double},
     sec1::{
         self, CompressedPoint, EncodedPoint, FromEncodedPoint, ModulusSize, ToCompactEncodedPoint,
         ToEncodedPoint, UncompressedPointSize,
@@ -77,7 +77,7 @@ where
     }
 }
 
-impl<C> AffineXCoordinate for AffinePoint<C>
+impl<C> AffineCoordinates for AffinePoint<C>
 where
     C: PrimeCurveParams,
 {
@@ -86,12 +86,7 @@ where
     fn x(&self) -> FieldBytes<C> {
         self.x.to_repr()
     }
-}
 
-impl<C> AffineYIsOdd for AffinePoint<C>
-where
-    C: PrimeCurveParams,
-{
     fn y_is_odd(&self) -> Choice {
         self.y.is_odd()
     }