diff --git a/include/mbedtls/oid.h b/include/mbedtls/oid.h
index 3c9831b..9545072 100644
--- a/include/mbedtls/oid.h
+++ b/include/mbedtls/oid.h
@@ -297,6 +297,8 @@
 
 #define MBEDTLS_OID_HMAC_SHA3_512               MBEDTLS_OID_NIST_ALG "\x02\x10" /**< id-hmacWithSHA3-512 OBJECT IDENTIFIER ::= { joint-iso-itu-t(2) country(16) us(840) organization(1) gov(101) csor(3) nistAlgorithms(4) hashalgs(2) hmacWithSHA3-512(16) } */
 
+#define MBEDTLS_OID_HMAC_RIPEMD160              MBEDTLS_OID_INTERNET "\x05\x05\x08\x01\x04" /**< id-hmacWithSHA1 OBJECT IDENTIFIER ::= {iso(1) iso-identified-organization(3) dod(6) internet(1) security(5) mechanisms(5) ipsec(8) isakmpOakley(1) hmacRIPEMD160(4)} */
+
 /*
  * Encryption algorithms
  */