diff --git a/Cargo.lock b/Cargo.lock
index 496d3d16..2bbbfdd3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -243,7 +243,7 @@ dependencies = [
 [[package]]
 name = "ecdsa"
 version = "0.7.2"
-source = "git+https://github.com/RustCrypto/signatures#de67a5244da7cd9d3836b852dd6b7f71104de736"
+source = "git+https://github.com/RustCrypto/signatures#416e6cc79366a2b7ddc52c98b8ee7bdfb33d9ff8"
 dependencies = [
  "elliptic-curve",
  "hmac",
@@ -259,7 +259,7 @@ checksum = "cd56b59865bce947ac5958779cfa508f6c3b9497cc762b7e24a12d11ccde2c4f"
 [[package]]
 name = "elliptic-curve"
 version = "0.5.0"
-source = "git+https://github.com/RustCrypto/traits#abff234bfe0ced9254615dc608ece09619a8db38"
+source = "git+https://github.com/RustCrypto/traits#a85525d61e1d882d12a4c00387655dded76fd0c2"
 dependencies = [
  "const-oid",
  "digest",
diff --git a/k256/src/lib.rs b/k256/src/lib.rs
index 83087013..d6e0b617 100644
--- a/k256/src/lib.rs
+++ b/k256/src/lib.rs
@@ -90,7 +90,7 @@ pub struct Secp256k1;
 
 impl elliptic_curve::Curve for Secp256k1 {
     /// 256-bit (32-byte)
-    type ElementSize = U32;
+    type FieldSize = U32;
 }
 
 impl elliptic_curve::weierstrass::Curve for Secp256k1 {
diff --git a/p256/src/lib.rs b/p256/src/lib.rs
index 34ecd547..d431692a 100644
--- a/p256/src/lib.rs
+++ b/p256/src/lib.rs
@@ -95,7 +95,7 @@ pub struct NistP256;
 
 impl elliptic_curve::Curve for NistP256 {
     /// 256-bit (32-byte)
-    type ElementSize = U32;
+    type FieldSize = U32;
 }
 
 impl elliptic_curve::weierstrass::Curve for NistP256 {
diff --git a/p384/src/lib.rs b/p384/src/lib.rs
index 7a525c44..f5bcd7d8 100644
--- a/p384/src/lib.rs
+++ b/p384/src/lib.rs
@@ -53,7 +53,7 @@ pub struct NistP384;
 
 impl elliptic_curve::Curve for NistP384 {
     /// 384-bit (48-byte)
-    type ElementSize = U48;
+    type FieldSize = U48;
 }
 
 #[cfg(feature = "oid")]