diff --git a/src/Node/Buffer/Class.purs b/src/Node/Buffer/Class.purs
index 1bf2702..abdc931 100644
--- a/src/Node/Buffer/Class.purs
+++ b/src/Node/Buffer/Class.purs
@@ -68,7 +68,7 @@ class Monad m <= MutableBuffer buf m | buf -> m where
   toArrayBuffer :: buf -> m ArrayBuffer
 
   -- | Reads a numeric value from a buffer at the specified offset.
-  read :: BufferValueType -> Offset -> buf -> m Int
+  read :: BufferValueType -> Offset -> buf -> m Number
 
   -- | Reads a section of a buffer as a string with the specified encoding.
   readString :: Encoding -> Offset -> Offset -> buf -> m String
@@ -77,7 +77,7 @@ class Monad m <= MutableBuffer buf m | buf -> m where
   toString :: Encoding -> buf -> m String
 
   -- | Writes a numeric value to a buffer at the specified offset.
-  write :: BufferValueType -> Int -> Offset -> buf -> m Unit
+  write :: BufferValueType -> Number -> Offset -> buf -> m Unit
 
   -- | Writes octets from a string to a buffer at the specified offset. Multi-byte
   -- | characters will not be written to the buffer if there is not enough capacity
diff --git a/src/Node/Buffer/Immutable.purs b/src/Node/Buffer/Immutable.purs
index 5994e1c..6c852e4 100644
--- a/src/Node/Buffer/Immutable.purs
+++ b/src/Node/Buffer/Immutable.purs
@@ -64,10 +64,10 @@ fromString str = fromStringImpl str <<< encodingToNode
 foreign import fromStringImpl :: String -> String -> ImmutableBuffer
 
 -- | Reads a numeric value from a buffer at the specified offset.
-read :: BufferValueType -> Offset -> ImmutableBuffer -> Int
+read :: BufferValueType -> Offset -> ImmutableBuffer -> Number
 read = readImpl <<< show
 
-foreign import readImpl :: String -> Offset -> ImmutableBuffer -> Int
+foreign import readImpl :: String -> Offset -> ImmutableBuffer -> Number
 
 -- | Reads a section of a buffer as a string with the specified encoding.
 readString :: Encoding -> Offset -> Offset -> ImmutableBuffer -> String
diff --git a/src/Node/Buffer/Internal.purs b/src/Node/Buffer/Internal.purs
index 6ee6662..b5d2883 100644
--- a/src/Node/Buffer/Internal.purs
+++ b/src/Node/Buffer/Internal.purs
@@ -64,7 +64,7 @@ fromArrayBuffer = usingToImmutable Immutable.fromArrayBuffer
 toArrayBuffer :: forall buf m. Monad m => buf -> m ArrayBuffer
 toArrayBuffer = usingFromImmutable Immutable.toArrayBuffer
 
-read :: forall buf m. Monad m => BufferValueType -> Offset -> buf -> m Int
+read :: forall buf m. Monad m => BufferValueType -> Offset -> buf -> m Number
 read t o = usingFromImmutable $ Immutable.read t o
 
 readString :: forall buf m. Monad m => Encoding -> Offset -> Offset -> buf -> m String
@@ -73,10 +73,10 @@ readString m o o' = usingFromImmutable $ Immutable.readString m o o'
 toString :: forall buf m. Monad m => Encoding -> buf -> m String
 toString m = usingFromImmutable $ Immutable.toString m
 
-write :: forall buf m. Monad m => BufferValueType -> Int -> Offset -> buf -> m Unit
+write :: forall buf m. Monad m => BufferValueType -> Number -> Offset -> buf -> m Unit
 write = writeInternal <<< show
 
-foreign import writeInternal :: forall buf m. String -> Int -> Offset -> buf -> m Unit
+foreign import writeInternal :: forall buf m. String -> Number -> Offset -> buf -> m Unit
 
 writeString :: forall buf m. Monad m => Encoding -> Offset -> Int -> String -> buf -> m Int
 writeString = writeStringInternal <<< encodingToNode
diff --git a/test/Test/Node/Buffer/Class.purs b/test/Test/Node/Buffer/Class.purs
index 633179d..be8ca0d 100644
--- a/test/Test/Node/Buffer/Class.purs
+++ b/test/Test/Node/Buffer/Class.purs
@@ -80,7 +80,7 @@ testMutableBuffer _ run = do
 
     testReadWrite :: Effect Unit
     testReadWrite = do
-      let val = 42
+      let val = 42.0
       readVal <- run do
         buf <- create 1 :: m buf
         write UInt8 val 0 buf
@@ -94,7 +94,7 @@ testMutableBuffer _ run = do
         buf <- fromArray [1,2,3,4,5] :: m buf
         read UInt8 2 buf
 
-      assertEqual {expected: 3, actual: readVal}
+      assertEqual {expected: 3.0, actual: readVal}
 
     testToArray :: Effect Unit
     testToArray = do
@@ -112,7 +112,7 @@ testMutableBuffer _ run = do
         buf <- fromString str ASCII :: m buf
         read UInt8 6 buf
 
-      assertEqual {expected: 32, actual: val} -- ASCII space
+      assertEqual {expected: 32.0, actual: val} -- ASCII space
 
     testToFromArrayBuffer :: Effect Unit
     testToFromArrayBuffer = do
diff --git a/test/Test/Node/Buffer/Immutable.purs b/test/Test/Node/Buffer/Immutable.purs
index 4468d42..5093bdb 100644
--- a/test/Test/Node/Buffer/Immutable.purs
+++ b/test/Test/Node/Buffer/Immutable.purs
@@ -82,7 +82,7 @@ testCreate = do
 testFromString :: Effect Unit
 testFromString = do
   let buf = Immutable.fromString "hello, world" ASCII
-  assertEqual {expected: 32, actual: Immutable.read UInt8 6 buf}
+  assertEqual {expected: 32.0, actual: Immutable.read UInt8 6 buf}
 
 testToString :: Effect Unit
 testToString = do