diff --git a/include/openssl/digest.h b/include/openssl/digest.h
index a453ea3..864917e 100644
--- a/include/openssl/digest.h
+++ b/include/openssl/digest.h
@@ -84,6 +84,10 @@
 OPENSSL_EXPORT const EVP_MD *EVP_sha384(void);
 OPENSSL_EXPORT const EVP_MD *EVP_sha512(void);
 
+/* EVP_md5_sha1 is a TLS-specific |EVP_MD| which computes the concatenation of
+ * MD5 and SHA-1, as used in TLS 1.1 and below. */
+OPENSSL_EXPORT const EVP_MD *EVP_md5_sha1(void);
+
 /* EVP_get_digestbynid returns an |EVP_MD| for the given NID, or NULL if no
  * such digest is known. */
 OPENSSL_EXPORT const EVP_MD *EVP_get_digestbynid(int nid);