diff --git a/smartmontools/CHANGELOG b/smartmontools/CHANGELOG
index 2feff913bfac9bee667121e83824684e233ee46d..87d2b9d0a5d0b492387f1058772f49104686b787 100644
--- a/smartmontools/CHANGELOG
+++ b/smartmontools/CHANGELOG
@@ -43,6 +43,10 @@ NOTES FOR FUTURE RELEASES: see TODO file.
 
 <DEVELOPERS: ADDITIONS TO THE CHANGE LOG GO JUST BELOW HERE, PLEASE>
 
+  [MS] drivedb.h updates:
+       - more Seagate Momentus 5400.6 drives
+       - HP 500GB drive MM0500EANCR
+
   [CF] Windows: Cleanup I/O-control declarations, rely on include
        files if possible.
 
diff --git a/smartmontools/drivedb.h b/smartmontools/drivedb.h
index 89f1f647e246dcefc9b971b70cb6e8ccb322c5f2..60f320b6d1625ec961da282e4adf4a123d79e6c3 100644
--- a/smartmontools/drivedb.h
+++ b/smartmontools/drivedb.h
@@ -183,6 +183,10 @@ const drive_settings builtin_knowndrives[] = {
     "GB1000EAFJL",
     "", "", ""
   },
+  { "HP 500GB SATA disk MM0500EANCR",
+    "MM0500EANCR",
+    "", "", ""
+  },
   { "IBM Deskstar 60GXP series",  // ER60A46A firmware
     "(IBM-|Hitachi )?IC35L0[12346]0AVER07.*",
     "ER60A46A",
@@ -1031,7 +1035,7 @@ const drive_settings builtin_knowndrives[] = {
     "", "", ""
   },
   { "Seagate Momentus 5400.6 series",
-    "ST9((12|25)0315AS|500325)ASG?",
+    "ST9(80313|160(301|314)|(12|25)0315|250317|(320|500)325|500327|640320)ASG?",
     "", "", ""
   },
   { "Seagate Momentus 5400 PSD series", // Hybrid drives