diff --git a/types/sawtooth-sdk/signing/secp256k1.d.ts b/types/sawtooth-sdk/signing/secp256k1.d.ts
index 2e0d4728e3..39385dccac 100644
--- a/types/sawtooth-sdk/signing/secp256k1.d.ts
+++ b/types/sawtooth-sdk/signing/secp256k1.d.ts
@@ -43,13 +43,13 @@ export class Secp256k1PrivateKey extends PrivateKey {
      * @return a private key instance
      * @throws if the private key is not valid
      */
-    static fromHex(privateKeyHex: string): PrivateKey;
+    static fromHex(privateKeyHex: string): Secp256k1PrivateKey;
 
     /**
      * @return generates a random PrivateKey
      *
      */
-    static newRandom(): PrivateKey;
+    static newRandom(): Secp256k1PrivateKey;
 }
 
 /**
@@ -75,10 +75,7 @@ export class Secp256k1PublicKey extends PublicKey {
      * @return a public key instance
      * @throws if the public key is not valid
      */
-    static fromHex(publicKeyHex: string): PublicKey;
-
-    /** Generate a new random public key */
-    static newRandom(): PublicKey;
+    static fromHex(publicKeyHex: string): Secp256k1PublicKey;
 }
 
 export class Secp256k1Context extends Context {
diff --git a/types/sawtooth-sdk/test/signing-tests.ts b/types/sawtooth-sdk/test/signing-tests.ts
index 6227da7dc2..d70bd4fed1 100644
--- a/types/sawtooth-sdk/test/signing-tests.ts
+++ b/types/sawtooth-sdk/test/signing-tests.ts
@@ -66,10 +66,10 @@ const privAlgoName = privateKey.getAlgorithmName();
 // $ExpectType Buffer
 const privAsBytes = privateKey.asBytes();
 
-// $ExpectType PrivateKey
+// $ExpectType Secp256k1PrivateKey
 const privFromHex = Secp256k1PrivateKey.fromHex('test');
 
-// $ExpectType PrivateKey
+// $ExpectType Secp256k1PrivateKey
 const privNewRandom = Secp256k1PrivateKey.newRandom();
 
 // $ExpectType Buffer
@@ -81,12 +81,9 @@ const pubAlgoName = publicKey.getAlgorithmName();
 // $ExpectType Buffer
 const pubAsBytes = publicKey.asBytes();
 
-// $ExpectType PublicKey
+// $ExpectType Secp256k1PublicKey
 const pubFromHex = Secp256k1PublicKey.fromHex('test');
 
-// $ExpectType PublicKey
-const pubNewRandom = Secp256k1PublicKey.newRandom();
-
 // $ExpectType string
 const contextAlgoName = cryptoContext.getAlgorithmName();