diff --git a/nmap-os-db b/nmap-os-db
index a6b379cba..47c35dfaa 100644
--- a/nmap-os-db
+++ b/nmap-os-db
@@ -20224,8 +20224,10 @@ IE(DFI=N%T=3B-45%TG=40%CD=S)
 # IBM OS/400 V5
 # IBM i5/OS V5R4
 # System I5 running i5/OS V5R4
-Fingerprint IBM i5/OS V5R4
+# OS400-V6R1
+Fingerprint IBM i5/OS V5R4 - V6R1
 Class IBM | i5/OS | V5 | general purpose
+Class IBM | i5/OS | V6 | general purpose
 SEQ(SP=9B-B3%GCD=1-6%ISR=A2-B8%TI=I%II=I%SS=S%TS=A|B)
 OPS(O1=M5ACNW0NNT11%O2=M578NW0NNT11%O3=M280NW0NNT11%O4=M5ACNW0NNT11%O5=M218NW0NNT11%O6=M109NNT11)
 WIN(W1=2000|FA00%W2=2000|FA00%W3=2000|FA00%W4=2000|FA00%W5=2000|FA00%W6=2000|FA00)