diff -up basement-0.0.15/Basement/Bits.hs~ basement-0.0.15/Basement/Bits.hs
--- basement-0.0.15/Basement/Bits.hs~	2022-02-28 12:00:48.000000000 +0800
+++ basement-0.0.15/Basement/Bits.hs	2023-02-16 18:50:32.947378064 +0800
@@ -54,7 +54,7 @@ import GHC.Int
 import Basement.Compat.Primitive
 
 #if WORD_SIZE_IN_BITS < 64
-import GHC.IntWord64
+import GHC.Exts
 #endif
 
 -- | operation over finite bits
diff -up basement-0.0.15/Basement/Numerical/Additive.hs~ basement-0.0.15/Basement/Numerical/Additive.hs
--- basement-0.0.15/Basement/Numerical/Additive.hs~	2022-02-28 12:00:48.000000000 +0800
+++ basement-0.0.15/Basement/Numerical/Additive.hs	2023-02-16 18:52:14.547975419 +0800
@@ -29,7 +29,7 @@ import qualified Basement.Types.Word128
 import qualified Basement.Types.Word256 as Word256
 
 #if WORD_SIZE_IN_BITS < 64
-import           GHC.IntWord64
+import           GHC.Exts
 #endif
 
 -- | Represent class of things that can be added together,
diff -up basement-0.0.15/Basement/Numerical/Conversion.hs~ basement-0.0.15/Basement/Numerical/Conversion.hs
--- basement-0.0.15/Basement/Numerical/Conversion.hs~	2022-02-28 12:00:48.000000000 +0800
+++ basement-0.0.15/Basement/Numerical/Conversion.hs	2023-02-16 18:28:38.844400110 +0800
@@ -25,7 +25,7 @@ import GHC.Word
 import Basement.Compat.Primitive
 
 #if WORD_SIZE_IN_BITS < 64
-import GHC.IntWord64
+import GHC.Exts
 #endif
 
 intToInt64 :: Int -> Int64
@@ -114,7 +114,7 @@
 #endif
 #else
 word64ToWord32s :: Word64 -> Word32x2
-word64ToWord32s (W64# w64) = Word32x2 (W32# (word64ToWord# (uncheckedShiftRL64# w64 32#))) (W32# (word64ToWord# w64))
+word64ToWord32s (W64# w64) = Word32x2 (W32# (wordToWord32# (word64ToWord# (uncheckedShiftRL64# w64 32#)))) (W32# (wordToWord32# (word64ToWord# w64)))
 #endif
 
 wordToChar :: Word -> Char
diff -up basement-0.0.15/Basement/PrimType.hs~ basement-0.0.15/Basement/PrimType.hs
--- basement-0.0.15/Basement/PrimType.hs~	2022-03-03 10:51:42.000000000 +0800
+++ basement-0.0.15/Basement/PrimType.hs	2023-02-16 18:52:13.884971521 +0800
@@ -54,7 +54,7 @@ import           Basement.Nat
 import qualified Prelude (quot)
 
 #if WORD_SIZE_IN_BITS < 64
-import           GHC.IntWord64
+import           GHC.Exts
 #endif
 
 #ifdef FOUNDATION_BOUNDS_CHECK
diff -up basement-0.0.15/Basement/Types/OffsetSize.hs~ basement-0.0.15/Basement/Types/OffsetSize.hs
--- basement-0.0.15/Basement/Types/OffsetSize.hs~	2019-09-02 11:58:08.000000000 +0800
+++ basement-0.0.15/Basement/Types/OffsetSize.hs	2023-02-16 18:49:45.703100306 +0800
@@ -69,7 +69,7 @@ import Data.List (foldl')
 import qualified Prelude
 
 #if WORD_SIZE_IN_BITS < 64
-import GHC.IntWord64
+import GHC.Exts
 #endif
 
 -- | File size in bytes
@@ -225,7 +225,7 @@
 
 csizeOfSize :: CountOf Word8 -> CSize
 #if WORD_SIZE_IN_BITS < 64
-csizeOfSize (CountOf (I# sz)) = CSize (W32# (int2Word# sz))
+csizeOfSize (CountOf (I# sz)) = CSize (W32# (wordToWord32# (int2Word# sz)))
 #else
 #if __GLASGOW_HASKELL__ >= 904
 csizeOfSize (CountOf (I# sz)) = CSize (W64# (wordToWord64# (int2Word# sz)))
@@ -238,7 +238,7 @@
 
 csizeOfOffset :: Offset8 -> CSize
 #if WORD_SIZE_IN_BITS < 64
-csizeOfOffset (Offset (I# sz)) = CSize (W32# (int2Word# sz))
+csizeOfOffset (Offset (I# sz)) = CSize (W32# (wordToWord32# (int2Word# sz)))
 #else
 #if __GLASGOW_HASKELL__ >= 904
 csizeOfOffset (Offset (I# sz)) = CSize (W64# (wordToWord64# (int2Word# sz)))
@@ -250,7 +250,7 @@
 sizeOfCSSize :: CSsize -> CountOf Word8
 sizeOfCSSize (CSsize (-1))      = error "invalid size: CSSize is -1"
 #if WORD_SIZE_IN_BITS < 64
-sizeOfCSSize (CSsize (I32# sz)) = CountOf (I# sz)
+sizeOfCSSize (CSsize (I32# sz)) = CountOf (I# (int32ToInt# sz))
 #else
 #if __GLASGOW_HASKELL__ >= 904
 sizeOfCSSize (CSsize (I64# sz)) = CountOf (I# (int64ToInt# sz))
@@ -261,7 +261,7 @@
 
 sizeOfCSize :: CSize -> CountOf Word8
 #if WORD_SIZE_IN_BITS < 64
-sizeOfCSize (CSize (W32# sz)) = CountOf (I# (word2Int# sz))
+sizeOfCSize (CSize (W32# sz)) = CountOf (I# (word2Int# (word32ToWord# sz)))
 #else
 #if __GLASGOW_HASKELL__ >= 904
 sizeOfCSize (CSize (W64# sz)) = CountOf (I# (word2Int# (word64ToWord# sz)))