diff --git a/gnss-converters.cabal b/gnss-converters.cabal
--- a/gnss-converters.cabal
+++ b/gnss-converters.cabal
@@ -1,5 +1,5 @@
 name:                  gnss-converters
-version:               0.1.10
+version:               0.1.11
 synopsis:              GNSS Converters.
 description:           Haskell bindings for GNSS converters.
 homepage:              http://github.com/swift-nav/gnss-converters
diff --git a/src/Data/RTCM3/SBP.hs b/src/Data/RTCM3/SBP.hs
--- a/src/Data/RTCM3/SBP.hs
+++ b/src/Data/RTCM3/SBP.hs
@@ -15,7 +15,7 @@
 import BasicPrelude
 import Control.Lens
 import Data.Bits
-import Data.HashMap.Strict
+import qualified Data.HashMap.Strict as H
 import Data.List.Extra hiding (concat, map)
 import Data.Time
 import Data.Word
@@ -104,8 +104,8 @@
 
 -- | Map L2 codes to SBP GnssSignal codes
 --
-l2codeToSBPSignalCode :: HashMap Word8 Word8
-l2codeToSBPSignalCode = fromList [(0, l2CMSidCode), (1, l2PSidCode)]
+l2codeToSBPSignalCode :: H.HashMap Word8 Word8
+l2codeToSBPSignalCode = H.fromList [(0, l2CMSidCode), (1, l2PSidCode)]
 
 -- | Maximum number of packed observations to allow in a single SBP message.
 --
@@ -324,7 +324,7 @@
       code = l2 ^. gpsL2Observation_code
       -- Checks GPS L2 code indicator.
       -- See DF016, pg. 3-17 of the RTCM3 spec.
-      obs2 = if member code l2codeToSBPSignalCode then
+      obs2 = if H.member code l2codeToSBPSignalCode then
                Just PackedObsContent
                  { _packedObsContent_P    = toP_L2 l1 l1e l2
                  , _packedObsContent_L    = toL_L2 l1 l1e l2 l2e
@@ -332,7 +332,7 @@
                  , _packedObsContent_lock = toLock_L2 l2
                  , _packedObsContent_sid  = GnssSignal
                    { _gnssSignal_sat      = fromIntegral $ sat - 1
-                   , _gnssSignal_code     = l2codeToSBPSignalCode ! code
+                   , _gnssSignal_code     = l2codeToSBPSignalCode H.! code
                    , _gnssSignal_reserved = 0
                    }
                  }