diff --git a/src/Text/Printer/Integral.hs b/src/Text/Printer/Integral.hs
--- a/src/Text/Printer/Integral.hs
+++ b/src/Text/Printer/Integral.hs
@@ -624,7 +624,7 @@
 {-# INLINE npUpHexBits #-}
 
 -- | Print a number in the specified positional numeral system.
-number' ∷ (PositionalSystem s, Ord α, Integral α, Printer p)
+number' ∷ (PositionalSystem s, Integral α, Printer p)
         ⇒ s
         → p -- ^ Prefix for negative values
         → p -- ^ Zero printer
@@ -653,21 +653,21 @@
 {-# SPECIALIZE number' ∷ Printer p ⇒ Decimal → p → p → p → Word16 → p #-}
 {-# SPECIALIZE number' ∷ Printer p ⇒ Decimal → p → p → p → Word32 → p #-}
 {-# SPECIALIZE number' ∷ Printer p ⇒ Decimal → p → p → p → Word64 → p #-}
-{-# SPECIALIZE number' ∷ (Ord α, Integral α, Printer p) ⇒ Binary → p → p → p → α → p #-}
-{-# SPECIALIZE number' ∷ (Ord α, Integral α, Printer p) ⇒ Decimal → p → p → p → α → p #-}
-{-# SPECIALIZE number' ∷ (Ord α, Integral α, Printer p) ⇒ Octal → p → p → p → α → p #-}
-{-# SPECIALIZE number' ∷ (Ord α, Integral α, Printer p) ⇒ Hexadecimal → p → p → p → α → p #-}
-{-# SPECIALIZE number' ∷ (Ord α, Integral α, Printer p) ⇒ LowHex → p → p → p → α → p #-}
-{-# SPECIALIZE number' ∷ (Ord α, Integral α, Printer p) ⇒ UpHex → p → p → p → α → p #-}
+{-# SPECIALIZE number' ∷ (Integral α, Printer p) ⇒ Binary → p → p → p → α → p #-}
+{-# SPECIALIZE number' ∷ (Integral α, Printer p) ⇒ Decimal → p → p → p → α → p #-}
+{-# SPECIALIZE number' ∷ (Integral α, Printer p) ⇒ Octal → p → p → p → α → p #-}
+{-# SPECIALIZE number' ∷ (Integral α, Printer p) ⇒ Hexadecimal → p → p → p → α → p #-}
+{-# SPECIALIZE number' ∷ (Integral α, Printer p) ⇒ LowHex → p → p → p → α → p #-}
+{-# SPECIALIZE number' ∷ (Integral α, Printer p) ⇒ UpHex → p → p → p → α → p #-}
 
 -- | Print a number in the specified positional numeral system. Negative
 --   values are prefixed with a minus sign.
-number ∷ (PositionalSystem s, Ord α, Integral α, Printer p) ⇒ s → α → p
+number ∷ (PositionalSystem s, Integral α, Printer p) ⇒ s → α → p
 number s = number' s (char7 '-') (printZeroIn s) mempty
 {-# INLINE number #-}
 
 -- | Print a number in the binary numeral system.
-binary' ∷ (Ord α, Integral α, Printer p)
+binary' ∷ (Integral α, Printer p)
         ⇒ p -- ^ Prefix for negative values
         → p -- ^ Zero printer
         → p -- ^ Prefix for positive values
@@ -677,12 +677,12 @@
 
 -- | Print a number in the binary numeral system. Negative values
 --   are prefixed with a minus sign.
-binary ∷ (Ord α, Integral α, Printer p) ⇒ α → p
+binary ∷ (Integral α, Printer p) ⇒ α → p
 binary = number Binary
 {-# INLINE binary #-}
 
 -- | Print a number in the octal numeral system.
-octal' ∷ (Ord α, Integral α, Printer p)
+octal' ∷ (Integral α, Printer p)
        ⇒ p -- ^ Prefix for negative values
        → p -- ^ Zero printer
        → p -- ^ Prefix for positive values
@@ -692,12 +692,12 @@
 
 -- | Print a number in the octal numeral system. Negative values
 --   are prefixed with a minus sign.
-octal ∷ (Ord α, Integral α, Printer p) ⇒ α → p
+octal ∷ (Integral α, Printer p) ⇒ α → p
 octal = number Octal
 {-# INLINE octal #-}
 
 -- | Print a number in the decimal numeral system.
-decimal' ∷ (Ord α, Integral α, Printer p)
+decimal' ∷ (Integral α, Printer p)
          ⇒ p -- ^ Prefix for negative values
          → p -- ^ Zero printer
          → p -- ^ Prefix for positive values
@@ -707,13 +707,13 @@
 
 -- | Print a number in the decimal numeral system. Negative values
 --   are prefixed with a minus sign.
-decimal ∷ (Ord α, Integral α, Printer p) ⇒ α → p
+decimal ∷ (Integral α, Printer p) ⇒ α → p
 decimal = number Decimal
 {-# INLINE decimal #-}
 
 -- | Print a number in the hexadecimal numeral system using lower case
 --   digits.
-lowHex' ∷ (Ord α, Integral α, Printer p)
+lowHex' ∷ (Integral α, Printer p)
         ⇒ p -- ^ Prefix for negative values
         → p -- ^ Zero printer
         → p -- ^ Prefix for positive values
@@ -723,13 +723,13 @@
 
 -- | Print a number in the hexadecimal numeral system using lower case
 --   digits. Negative values are prefixed with a minus sign.
-lowHex ∷ (Ord α, Integral α, Printer p) ⇒ α → p
+lowHex ∷ (Integral α, Printer p) ⇒ α → p
 lowHex = number LowHex
 {-# INLINE lowHex #-}
 
 -- | Print a number in the hexadecimal numeral system using upper case
 --   digits.
-upHex' ∷ (Ord α, Integral α, Printer p)
+upHex' ∷ (Integral α, Printer p)
        ⇒ p -- ^ Prefix for negative values
        → p -- ^ Zero printer
        → p -- ^ Prefix for positive values
@@ -739,7 +739,7 @@
 
 -- | Print a number in the hexadecimal numeral system using upper case
 --   digits. Negative values are prefixed with a minus sign.
-upHex ∷ (Ord α, Integral α, Printer p) ⇒ α → p
+upHex ∷ (Integral α, Printer p) ⇒ α → p
 upHex = number UpHex
 {-# INLINE upHex #-}
 
diff --git a/text-printer.cabal b/text-printer.cabal
--- a/text-printer.cabal
+++ b/text-printer.cabal
@@ -1,5 +1,5 @@
 Name: text-printer
-Version: 0.5
+Version: 0.5.0.1
 Category: Text
 Stability: experimental
 Synopsis: Abstract interface for text builders/printers.
@@ -19,8 +19,8 @@
 Extra-Source-Files:
   README.md
 
-Tested-With: GHC==7.2.2, GHC==7.4.2, GHC==7.6.3, GHC==7.8.4,
-             GHC==7.10.3, GHC==8.0.1
+Tested-With: GHC==7.6.3, GHC==7.8.4, GHC==7.10.3, GHC==8.0.2, GHC==8.2.2,
+             GHC==8.4.4, GHC==8.6.1
 
 Cabal-Version: >= 1.10.0
 Build-Type: Simple
@@ -36,7 +36,7 @@
     bytestring >= 0.10,
     text,
     pretty,
-    text-latin1 >= 0.3,
+    text-latin1 >= 0.3.1,
     semigroups >= 0.18.2
   Hs-Source-Dirs: src
   GHC-Options: -Wall