diff --git a/byteunits.cabal b/byteunits.cabal
--- a/byteunits.cabal
+++ b/byteunits.cabal
@@ -1,11 +1,13 @@
--- This file has been generated from package.yaml by hpack version 0.21.2.
+cabal-version: 1.12
+
+-- This file has been generated from package.yaml by hpack version 0.33.0.
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: 20179e2125273750a449e60394c889ddc2f0e22d03d684a96fbb3f20d15e3f41
+-- hash: 1aebbb6199a4258e8480dce71f674a6d04dc9dedb98013f431bf1a3587852931
 
 name:                byteunits
-version:             0.4.0.2
+version:             0.4.0.3
 description:         Human friendly conversion between byte units (KB, MB, GB...)...
 synopsis:            Human friendly conversion between byte units (KB, MB, GB...)
 license:             BSD3
@@ -16,8 +18,6 @@
 homepage:            https://github.com/chrissound/byteunits#readme
 bug-reports:         https://github.com/chrissound/byteunits/issues
 build-type:          Simple
-cabal-version:       >= 1.10
-
 extra-source-files:
     ChangeLog.md
 
diff --git a/src/Data/ByteUnits.hs b/src/Data/ByteUnits.hs
--- a/src/Data/ByteUnits.hs
+++ b/src/Data/ByteUnits.hs
@@ -36,8 +36,8 @@
   MegaBytes -> v * (1024 ** 2)
   GigaBytes -> v * (1024 ** 3)
   TeraBytes -> v * (1024 ** 4)
-  PetaBytes -> v * (1024 ** 4)
-  ExaBytes  -> v * (1024 ** 5)
+  PetaBytes -> v * (1024 ** 5)
+  ExaBytes  -> v * (1024 ** 6)
 
 -- | Converts the ByteValue to an ByteValue with the specified ByteUnit
 --
@@ -50,8 +50,8 @@
   MegaBytes -> ByteValue (bytes / (1024 ** 2)) MegaBytes
   GigaBytes -> ByteValue (bytes / (1024 ** 3)) GigaBytes
   TeraBytes -> ByteValue (bytes / (1024 ** 4)) TeraBytes
-  PetaBytes -> ByteValue (bytes / (1024 ** 4)) PetaBytes
-  ExaBytes  -> ByteValue (bytes / (1024 ** 5)) ExaBytes
+  PetaBytes -> ByteValue (bytes / (1024 ** 5)) PetaBytes
+  ExaBytes  -> ByteValue (bytes / (1024 ** 6)) ExaBytes
   where bytes = getBytes bv
 
 -- | Converts to the largest unit size provided the float value is > 1