diff --git a/sbp.cabal b/sbp.cabal
--- a/sbp.cabal
+++ b/sbp.cabal
@@ -1,5 +1,5 @@
 name:                  sbp
-version:               4.3.3
+version:               4.4.0
 synopsis:              SwiftNav's SBP Library
 homepage:              https://github.com/swift-nav/libsbp
 license:               MIT
diff --git a/src/SwiftNav/SBP/Msg.hs b/src/SwiftNav/SBP/Msg.hs
--- a/src/SwiftNav/SBP/Msg.hs
+++ b/src/SwiftNav/SBP/Msg.hs
@@ -132,7 +132,6 @@
    | SBPMsgGloBiases MsgGloBiases Msg
    | SBPMsgGnssCapb MsgGnssCapb Msg
    | SBPMsgGnssTimeOffset MsgGnssTimeOffset Msg
-   | SBPMsgGpsLeapSecond MsgGpsLeapSecond Msg
    | SBPMsgGpsTime MsgGpsTime Msg
    | SBPMsgGpsTimeDepA MsgGpsTimeDepA Msg
    | SBPMsgGpsTimeGnss MsgGpsTimeGnss Msg
@@ -148,7 +147,6 @@
    | SBPMsgInsStatus MsgInsStatus Msg
    | SBPMsgInsUpdates MsgInsUpdates Msg
    | SBPMsgIono MsgIono Msg
-   | SBPMsgItrf MsgItrf Msg
    | SBPMsgLinuxCpuState MsgLinuxCpuState Msg
    | SBPMsgLinuxCpuStateDepA MsgLinuxCpuStateDepA Msg
    | SBPMsgLinuxMemState MsgLinuxMemState Msg
@@ -195,6 +193,7 @@
    | SBPMsgPrintDep MsgPrintDep Msg
    | SBPMsgProtectionLevel MsgProtectionLevel Msg
    | SBPMsgProtectionLevelDepA MsgProtectionLevelDepA Msg
+   | SBPMsgReferenceFrameParam MsgReferenceFrameParam Msg
    | SBPMsgReset MsgReset Msg
    | SBPMsgResetDep MsgResetDep Msg
    | SBPMsgResetFilters MsgResetFilters Msg
@@ -260,6 +259,7 @@
    | SBPMsgUartState MsgUartState Msg
    | SBPMsgUartStateDepa MsgUartStateDepa Msg
    | SBPMsgUserData MsgUserData Msg
+   | SBPMsgUtcLeapSecond MsgUtcLeapSecond Msg
    | SBPMsgUtcTime MsgUtcTime Msg
    | SBPMsgUtcTimeGnss MsgUtcTimeGnss Msg
    | SBPMsgVelBody MsgVelBody Msg
@@ -364,7 +364,6 @@
           | _msgSBPType == msgGloBiases = SBPMsgGloBiases (decode (fromStrict (unBytes _msgSBPPayload))) m
           | _msgSBPType == msgGnssCapb = SBPMsgGnssCapb (decode (fromStrict (unBytes _msgSBPPayload))) m
           | _msgSBPType == msgGnssTimeOffset = SBPMsgGnssTimeOffset (decode (fromStrict (unBytes _msgSBPPayload))) m
-          | _msgSBPType == msgGpsLeapSecond = SBPMsgGpsLeapSecond (decode (fromStrict (unBytes _msgSBPPayload))) m
           | _msgSBPType == msgGpsTime = SBPMsgGpsTime (decode (fromStrict (unBytes _msgSBPPayload))) m
           | _msgSBPType == msgGpsTimeDepA = SBPMsgGpsTimeDepA (decode (fromStrict (unBytes _msgSBPPayload))) m
           | _msgSBPType == msgGpsTimeGnss = SBPMsgGpsTimeGnss (decode (fromStrict (unBytes _msgSBPPayload))) m
@@ -380,7 +379,6 @@
           | _msgSBPType == msgInsStatus = SBPMsgInsStatus (decode (fromStrict (unBytes _msgSBPPayload))) m
           | _msgSBPType == msgInsUpdates = SBPMsgInsUpdates (decode (fromStrict (unBytes _msgSBPPayload))) m
           | _msgSBPType == msgIono = SBPMsgIono (decode (fromStrict (unBytes _msgSBPPayload))) m
-          | _msgSBPType == msgItrf = SBPMsgItrf (decode (fromStrict (unBytes _msgSBPPayload))) m
           | _msgSBPType == msgLinuxCpuState = SBPMsgLinuxCpuState (decode (fromStrict (unBytes _msgSBPPayload))) m
           | _msgSBPType == msgLinuxCpuStateDepA = SBPMsgLinuxCpuStateDepA (decode (fromStrict (unBytes _msgSBPPayload))) m
           | _msgSBPType == msgLinuxMemState = SBPMsgLinuxMemState (decode (fromStrict (unBytes _msgSBPPayload))) m
@@ -427,6 +425,7 @@
           | _msgSBPType == msgPrintDep = SBPMsgPrintDep (decode (fromStrict (unBytes _msgSBPPayload))) m
           | _msgSBPType == msgProtectionLevel = SBPMsgProtectionLevel (decode (fromStrict (unBytes _msgSBPPayload))) m
           | _msgSBPType == msgProtectionLevelDepA = SBPMsgProtectionLevelDepA (decode (fromStrict (unBytes _msgSBPPayload))) m
+          | _msgSBPType == msgReferenceFrameParam = SBPMsgReferenceFrameParam (decode (fromStrict (unBytes _msgSBPPayload))) m
           | _msgSBPType == msgReset = SBPMsgReset (decode (fromStrict (unBytes _msgSBPPayload))) m
           | _msgSBPType == msgResetDep = SBPMsgResetDep (decode (fromStrict (unBytes _msgSBPPayload))) m
           | _msgSBPType == msgResetFilters = SBPMsgResetFilters (decode (fromStrict (unBytes _msgSBPPayload))) m
@@ -492,6 +491,7 @@
           | _msgSBPType == msgUartState = SBPMsgUartState (decode (fromStrict (unBytes _msgSBPPayload))) m
           | _msgSBPType == msgUartStateDepa = SBPMsgUartStateDepa (decode (fromStrict (unBytes _msgSBPPayload))) m
           | _msgSBPType == msgUserData = SBPMsgUserData (decode (fromStrict (unBytes _msgSBPPayload))) m
+          | _msgSBPType == msgUtcLeapSecond = SBPMsgUtcLeapSecond (decode (fromStrict (unBytes _msgSBPPayload))) m
           | _msgSBPType == msgUtcTime = SBPMsgUtcTime (decode (fromStrict (unBytes _msgSBPPayload))) m
           | _msgSBPType == msgUtcTimeGnss = SBPMsgUtcTimeGnss (decode (fromStrict (unBytes _msgSBPPayload))) m
           | _msgSBPType == msgVelBody = SBPMsgVelBody (decode (fromStrict (unBytes _msgSBPPayload))) m
@@ -588,7 +588,6 @@
       encoder (SBPMsgGloBiases _ m) = put m
       encoder (SBPMsgGnssCapb _ m) = put m
       encoder (SBPMsgGnssTimeOffset _ m) = put m
-      encoder (SBPMsgGpsLeapSecond _ m) = put m
       encoder (SBPMsgGpsTime _ m) = put m
       encoder (SBPMsgGpsTimeDepA _ m) = put m
       encoder (SBPMsgGpsTimeGnss _ m) = put m
@@ -604,7 +603,6 @@
       encoder (SBPMsgInsStatus _ m) = put m
       encoder (SBPMsgInsUpdates _ m) = put m
       encoder (SBPMsgIono _ m) = put m
-      encoder (SBPMsgItrf _ m) = put m
       encoder (SBPMsgLinuxCpuState _ m) = put m
       encoder (SBPMsgLinuxCpuStateDepA _ m) = put m
       encoder (SBPMsgLinuxMemState _ m) = put m
@@ -651,6 +649,7 @@
       encoder (SBPMsgPrintDep _ m) = put m
       encoder (SBPMsgProtectionLevel _ m) = put m
       encoder (SBPMsgProtectionLevelDepA _ m) = put m
+      encoder (SBPMsgReferenceFrameParam _ m) = put m
       encoder (SBPMsgReset _ m) = put m
       encoder (SBPMsgResetDep _ m) = put m
       encoder (SBPMsgResetFilters _ m) = put m
@@ -716,6 +715,7 @@
       encoder (SBPMsgUartState _ m) = put m
       encoder (SBPMsgUartStateDepa _ m) = put m
       encoder (SBPMsgUserData _ m) = put m
+      encoder (SBPMsgUtcLeapSecond _ m) = put m
       encoder (SBPMsgUtcTime _ m) = put m
       encoder (SBPMsgUtcTimeGnss _ m) = put m
       encoder (SBPMsgVelBody _ m) = put m
@@ -816,7 +816,6 @@
         | msgType == msgGloBiases = SBPMsgGloBiases <$> pure (decode (fromStrict (unBytes payload))) <*> parseJSON obj
         | msgType == msgGnssCapb = SBPMsgGnssCapb <$> pure (decode (fromStrict (unBytes payload))) <*> parseJSON obj
         | msgType == msgGnssTimeOffset = SBPMsgGnssTimeOffset <$> pure (decode (fromStrict (unBytes payload))) <*> parseJSON obj
-        | msgType == msgGpsLeapSecond = SBPMsgGpsLeapSecond <$> pure (decode (fromStrict (unBytes payload))) <*> parseJSON obj
         | msgType == msgGpsTime = SBPMsgGpsTime <$> pure (decode (fromStrict (unBytes payload))) <*> parseJSON obj
         | msgType == msgGpsTimeDepA = SBPMsgGpsTimeDepA <$> pure (decode (fromStrict (unBytes payload))) <*> parseJSON obj
         | msgType == msgGpsTimeGnss = SBPMsgGpsTimeGnss <$> pure (decode (fromStrict (unBytes payload))) <*> parseJSON obj
@@ -832,7 +831,6 @@
         | msgType == msgInsStatus = SBPMsgInsStatus <$> pure (decode (fromStrict (unBytes payload))) <*> parseJSON obj
         | msgType == msgInsUpdates = SBPMsgInsUpdates <$> pure (decode (fromStrict (unBytes payload))) <*> parseJSON obj
         | msgType == msgIono = SBPMsgIono <$> pure (decode (fromStrict (unBytes payload))) <*> parseJSON obj
-        | msgType == msgItrf = SBPMsgItrf <$> pure (decode (fromStrict (unBytes payload))) <*> parseJSON obj
         | msgType == msgLinuxCpuState = SBPMsgLinuxCpuState <$> pure (decode (fromStrict (unBytes payload))) <*> parseJSON obj
         | msgType == msgLinuxCpuStateDepA = SBPMsgLinuxCpuStateDepA <$> pure (decode (fromStrict (unBytes payload))) <*> parseJSON obj
         | msgType == msgLinuxMemState = SBPMsgLinuxMemState <$> pure (decode (fromStrict (unBytes payload))) <*> parseJSON obj
@@ -879,6 +877,7 @@
         | msgType == msgPrintDep = SBPMsgPrintDep <$> pure (decode (fromStrict (unBytes payload))) <*> parseJSON obj
         | msgType == msgProtectionLevel = SBPMsgProtectionLevel <$> pure (decode (fromStrict (unBytes payload))) <*> parseJSON obj
         | msgType == msgProtectionLevelDepA = SBPMsgProtectionLevelDepA <$> pure (decode (fromStrict (unBytes payload))) <*> parseJSON obj
+        | msgType == msgReferenceFrameParam = SBPMsgReferenceFrameParam <$> pure (decode (fromStrict (unBytes payload))) <*> parseJSON obj
         | msgType == msgReset = SBPMsgReset <$> pure (decode (fromStrict (unBytes payload))) <*> parseJSON obj
         | msgType == msgResetDep = SBPMsgResetDep <$> pure (decode (fromStrict (unBytes payload))) <*> parseJSON obj
         | msgType == msgResetFilters = SBPMsgResetFilters <$> pure (decode (fromStrict (unBytes payload))) <*> parseJSON obj
@@ -944,6 +943,7 @@
         | msgType == msgUartState = SBPMsgUartState <$> pure (decode (fromStrict (unBytes payload))) <*> parseJSON obj
         | msgType == msgUartStateDepa = SBPMsgUartStateDepa <$> pure (decode (fromStrict (unBytes payload))) <*> parseJSON obj
         | msgType == msgUserData = SBPMsgUserData <$> pure (decode (fromStrict (unBytes payload))) <*> parseJSON obj
+        | msgType == msgUtcLeapSecond = SBPMsgUtcLeapSecond <$> pure (decode (fromStrict (unBytes payload))) <*> parseJSON obj
         | msgType == msgUtcTime = SBPMsgUtcTime <$> pure (decode (fromStrict (unBytes payload))) <*> parseJSON obj
         | msgType == msgUtcTimeGnss = SBPMsgUtcTimeGnss <$> pure (decode (fromStrict (unBytes payload))) <*> parseJSON obj
         | msgType == msgVelBody = SBPMsgVelBody <$> pure (decode (fromStrict (unBytes payload))) <*> parseJSON obj
@@ -1045,7 +1045,6 @@
   toJSON (SBPMsgGloBiases n m) = toJSON n <<>> toJSON m
   toJSON (SBPMsgGnssCapb n m) = toJSON n <<>> toJSON m
   toJSON (SBPMsgGnssTimeOffset n m) = toJSON n <<>> toJSON m
-  toJSON (SBPMsgGpsLeapSecond n m) = toJSON n <<>> toJSON m
   toJSON (SBPMsgGpsTime n m) = toJSON n <<>> toJSON m
   toJSON (SBPMsgGpsTimeDepA n m) = toJSON n <<>> toJSON m
   toJSON (SBPMsgGpsTimeGnss n m) = toJSON n <<>> toJSON m
@@ -1061,7 +1060,6 @@
   toJSON (SBPMsgInsStatus n m) = toJSON n <<>> toJSON m
   toJSON (SBPMsgInsUpdates n m) = toJSON n <<>> toJSON m
   toJSON (SBPMsgIono n m) = toJSON n <<>> toJSON m
-  toJSON (SBPMsgItrf n m) = toJSON n <<>> toJSON m
   toJSON (SBPMsgLinuxCpuState n m) = toJSON n <<>> toJSON m
   toJSON (SBPMsgLinuxCpuStateDepA n m) = toJSON n <<>> toJSON m
   toJSON (SBPMsgLinuxMemState n m) = toJSON n <<>> toJSON m
@@ -1108,6 +1106,7 @@
   toJSON (SBPMsgPrintDep n m) = toJSON n <<>> toJSON m
   toJSON (SBPMsgProtectionLevel n m) = toJSON n <<>> toJSON m
   toJSON (SBPMsgProtectionLevelDepA n m) = toJSON n <<>> toJSON m
+  toJSON (SBPMsgReferenceFrameParam n m) = toJSON n <<>> toJSON m
   toJSON (SBPMsgReset n m) = toJSON n <<>> toJSON m
   toJSON (SBPMsgResetDep _ m) = toJSON m
   toJSON (SBPMsgResetFilters n m) = toJSON n <<>> toJSON m
@@ -1173,6 +1172,7 @@
   toJSON (SBPMsgUartState n m) = toJSON n <<>> toJSON m
   toJSON (SBPMsgUartStateDepa n m) = toJSON n <<>> toJSON m
   toJSON (SBPMsgUserData n m) = toJSON n <<>> toJSON m
+  toJSON (SBPMsgUtcLeapSecond n m) = toJSON n <<>> toJSON m
   toJSON (SBPMsgUtcTime n m) = toJSON n <<>> toJSON m
   toJSON (SBPMsgUtcTimeGnss n m) = toJSON n <<>> toJSON m
   toJSON (SBPMsgVelBody n m) = toJSON n <<>> toJSON m
@@ -1268,7 +1268,6 @@
   msg f (SBPMsgGloBiases n m) = SBPMsgGloBiases n <$> f m
   msg f (SBPMsgGnssCapb n m) = SBPMsgGnssCapb n <$> f m
   msg f (SBPMsgGnssTimeOffset n m) = SBPMsgGnssTimeOffset n <$> f m
-  msg f (SBPMsgGpsLeapSecond n m) = SBPMsgGpsLeapSecond n <$> f m
   msg f (SBPMsgGpsTime n m) = SBPMsgGpsTime n <$> f m
   msg f (SBPMsgGpsTimeDepA n m) = SBPMsgGpsTimeDepA n <$> f m
   msg f (SBPMsgGpsTimeGnss n m) = SBPMsgGpsTimeGnss n <$> f m
@@ -1284,7 +1283,6 @@
   msg f (SBPMsgInsStatus n m) = SBPMsgInsStatus n <$> f m
   msg f (SBPMsgInsUpdates n m) = SBPMsgInsUpdates n <$> f m
   msg f (SBPMsgIono n m) = SBPMsgIono n <$> f m
-  msg f (SBPMsgItrf n m) = SBPMsgItrf n <$> f m
   msg f (SBPMsgLinuxCpuState n m) = SBPMsgLinuxCpuState n <$> f m
   msg f (SBPMsgLinuxCpuStateDepA n m) = SBPMsgLinuxCpuStateDepA n <$> f m
   msg f (SBPMsgLinuxMemState n m) = SBPMsgLinuxMemState n <$> f m
@@ -1331,6 +1329,7 @@
   msg f (SBPMsgPrintDep n m) = SBPMsgPrintDep n <$> f m
   msg f (SBPMsgProtectionLevel n m) = SBPMsgProtectionLevel n <$> f m
   msg f (SBPMsgProtectionLevelDepA n m) = SBPMsgProtectionLevelDepA n <$> f m
+  msg f (SBPMsgReferenceFrameParam n m) = SBPMsgReferenceFrameParam n <$> f m
   msg f (SBPMsgReset n m) = SBPMsgReset n <$> f m
   msg f (SBPMsgResetDep n m) = SBPMsgResetDep n <$> f m
   msg f (SBPMsgResetFilters n m) = SBPMsgResetFilters n <$> f m
@@ -1396,6 +1395,7 @@
   msg f (SBPMsgUartState n m) = SBPMsgUartState n <$> f m
   msg f (SBPMsgUartStateDepa n m) = SBPMsgUartStateDepa n <$> f m
   msg f (SBPMsgUserData n m) = SBPMsgUserData n <$> f m
+  msg f (SBPMsgUtcLeapSecond n m) = SBPMsgUtcLeapSecond n <$> f m
   msg f (SBPMsgUtcTime n m) = SBPMsgUtcTime n <$> f m
   msg f (SBPMsgUtcTimeGnss n m) = SBPMsgUtcTimeGnss n <$> f m
   msg f (SBPMsgVelBody n m) = SBPMsgVelBody n <$> f m
diff --git a/src/SwiftNav/SBP/Navigation.hs b/src/SwiftNav/SBP/Navigation.hs
--- a/src/SwiftNav/SBP/Navigation.hs
+++ b/src/SwiftNav/SBP/Navigation.hs
@@ -2304,44 +2304,44 @@
 $(makeJSON "_msgProtectionLevel_" ''MsgProtectionLevel)
 $(makeLenses ''MsgProtectionLevel)
 
-msgGpsLeapSecond :: Word16
-msgGpsLeapSecond = 0x023A
+msgUtcLeapSecond :: Word16
+msgUtcLeapSecond = 0x023A
 
--- | SBP class for message MSG_GPS_LEAP_SECOND (0x023A).
+-- | SBP class for message MSG_UTC_LEAP_SECOND (0x023A).
 --
 -- Emulates the GPS CNAV message, reserving bytes for future broadcast of the
 -- drift model parameters.
-data MsgGpsLeapSecond = MsgGpsLeapSecond
-  { _msgGpsLeapSecond_stub :: ![Word8]
+data MsgUtcLeapSecond = MsgUtcLeapSecond
+  { _msgUtcLeapSecond_stub :: ![Word8]
   } deriving ( Show, Read, Eq )
 
-instance Binary MsgGpsLeapSecond where
+instance Binary MsgUtcLeapSecond where
   get = do
-    _msgGpsLeapSecond_stub <- whileM (not <$> isEmpty) getWord8
-    pure MsgGpsLeapSecond {..}
+    _msgUtcLeapSecond_stub <- whileM (not <$> isEmpty) getWord8
+    pure MsgUtcLeapSecond {..}
 
-  put MsgGpsLeapSecond {..} = do
-    mapM_ putWord8 _msgGpsLeapSecond_stub
+  put MsgUtcLeapSecond {..} = do
+    mapM_ putWord8 _msgUtcLeapSecond_stub
 
-$(makeSBP 'msgGpsLeapSecond ''MsgGpsLeapSecond)
-$(makeJSON "_msgGpsLeapSecond_" ''MsgGpsLeapSecond)
-$(makeLenses ''MsgGpsLeapSecond)
+$(makeSBP 'msgUtcLeapSecond ''MsgUtcLeapSecond)
+$(makeJSON "_msgUtcLeapSecond_" ''MsgUtcLeapSecond)
+$(makeLenses ''MsgUtcLeapSecond)
 
-msgItrf :: Word16
-msgItrf = 0x0244
+msgReferenceFrameParam :: Word16
+msgReferenceFrameParam = 0x0244
 
-data MsgItrf = MsgItrf
-  { _msgItrf_stub :: ![Word8]
+data MsgReferenceFrameParam = MsgReferenceFrameParam
+  { _msgReferenceFrameParam_stub :: ![Word8]
   } deriving ( Show, Read, Eq )
 
-instance Binary MsgItrf where
+instance Binary MsgReferenceFrameParam where
   get = do
-    _msgItrf_stub <- whileM (not <$> isEmpty) getWord8
-    pure MsgItrf {..}
+    _msgReferenceFrameParam_stub <- whileM (not <$> isEmpty) getWord8
+    pure MsgReferenceFrameParam {..}
 
-  put MsgItrf {..} = do
-    mapM_ putWord8 _msgItrf_stub
+  put MsgReferenceFrameParam {..} = do
+    mapM_ putWord8 _msgReferenceFrameParam_stub
 
-$(makeSBP 'msgItrf ''MsgItrf)
-$(makeJSON "_msgItrf_" ''MsgItrf)
-$(makeLenses ''MsgItrf)
+$(makeSBP 'msgReferenceFrameParam ''MsgReferenceFrameParam)
+$(makeJSON "_msgReferenceFrameParam_" ''MsgReferenceFrameParam)
+$(makeLenses ''MsgReferenceFrameParam)