diff --git a/rr.c b/rr.c
index c7ab12e..1698c0a 100644
--- a/rr.c
+++ b/rr.c
@@ -874,6 +874,8 @@ int extract_algorithm(char **s, char *what)
             return ALG_ED25519;
         if (strcmp(str_alg, "ed448") == 0)
             return ALG_ED448;
+        if (strcmp(str_alg, "xmss") == 0)
+            return ALG_XMSS;
 
         if (strcmp(str_alg, "privatedns") == 0)
             return ALG_PRIVATEDNS;
@@ -909,6 +911,8 @@ int algorithm_type(int alg)
         return ALG_ECC_FAMILY;
     case ALG_ED448:
         return ALG_ECC_FAMILY;
+    case ALG_XMSS:
+        return ALG_XMSS_FAMILY;
     case ALG_PRIVATEDNS:
         return ALG_PRIVATE_FAMILY;
     case ALG_PRIVATEOID:
diff --git a/rr.h b/rr.h
index a2d39b2..fdc556d 100644
--- a/rr.h
+++ b/rr.h
@@ -76,6 +76,7 @@
 #define ALG_RSA_FAMILY      2
 #define ALG_PRIVATE_FAMILY  3
 #define ALG_ECC_FAMILY      4
+#define ALG_XMSS_FAMILY     5
 
 #define RRCAST(t) struct rr_ ## t *rr = (struct rr_ ## t *)rrv
 
diff --git a/sshfp.c b/sshfp.c
index 67fe236..92c588f 100644
--- a/sshfp.c
+++ b/sshfp.c
@@ -24,7 +24,7 @@ static struct rr* sshfp_parse(char *name, long ttl, int type, char *s)
 
     algorithm = extract_integer(&s, "algorithm", NULL);
     if (algorithm < 0)  return NULL;
-    if (algorithm != 1 && algorithm != 2 && algorithm != 3 && algorithm != 4)
+    if (algorithm != 1 && algorithm != 2 && algorithm != 3 && algorithm != 4 && algorithm != 5 )
         return bitch("unsupported algorithm");
     rr->algorithm = algorithm;