diff --git a/oids.h b/oids.h
index 33cb23ac1..030483aa1 100644
--- a/oids.h
+++ b/oids.h
@@ -56,6 +56,12 @@ DEFINE_OID(1, iso)
 						//DEFINE_OID(ansi_x9_62_curves_prime()+5, secp239v2)
 						//DEFINE_OID(ansi_x9_62_curves_prime()+6, secp239v3)
 						DEFINE_OID(ansi_x9_62_curves_prime()+7, secp256r1)  // secp256v1
+				DEFINE_OID(ansi_x9_62()+4, ansi_signatures)
+						DEFINE_OID(ansi_signatures()+3, ecdsa_with_sha2)
+							DEFINE_OID(ecdsa_with_sha2()+1, ecdsa_with_sha224)
+							DEFINE_OID(ecdsa_with_sha2()+2, ecdsa_with_sha256)
+							DEFINE_OID(ecdsa_with_sha2()+3, ecdsa_with_sha384)
+							DEFINE_OID(ecdsa_with_sha2()+4, ecdsa_with_sha512)
 			DEFINE_OID(iso_us()+113549, rsadsi)
 				DEFINE_OID(rsadsi()+1, pkcs)
 					DEFINE_OID(pkcs()+1, pkcs_1)