diff --git a/fuzzyset.cabal b/fuzzyset.cabal
--- a/fuzzyset.cabal
+++ b/fuzzyset.cabal
@@ -1,5 +1,5 @@
 name:                fuzzyset
-version:             0.1.0.7
+version:             0.1.0.8
 synopsis:            Fuzzy set for approximate string matching
 description:         This library is based on the Python and JavaScript libraries with the same name.
 homepage:            https://github.com/laserpants/fuzzyset-haskell
@@ -11,7 +11,7 @@
 category:            Data
 build-type:          Simple
 extra-source-files:  README.md
-cabal-version:       >=1.10
+cabal-version:       >= 1.10
 
 library
   hs-source-dirs:      src
@@ -22,12 +22,12 @@
                      , Data.FuzzySet.Util
   build-depends:       base >= 4.7 && < 5
                      , base-unicode-symbols >= 0.2.2.4 && < 0.3
-                     , data-default ==0.7.1.1
-                     , lens >=4.15.4
-                     , text >=1.2.2.2
-                     , text-metrics ==0.3.0
-                     , unordered-containers >=0.2.8.0
-                     , vector >=0.12.0.1
+                     , data-default >= 0.7.1.1 && < 0.8
+                     , lens >= 4.15.4
+                     , text >= 1.2.2.2
+                     , text-metrics >= 0.3.0 && < 0.4
+                     , unordered-containers >= 0.2.8.0
+                     , vector >= 0.12.0.1
   default-language:    Haskell2010
 
 test-suite fuzzyset-test
@@ -36,12 +36,12 @@
   main-is:             Spec.hs
   build-depends:       base
                      , base-unicode-symbols >= 0.2.2.4 && < 0.3
-                     , hspec >=2.4.4
+                     , hspec >= 2.4.4
                      , fuzzyset
-                     , lens >=4.15.4
-                     , text >=1.2.2.2
-                     , ieee754 ==0.8.0
-                     , unordered-containers >=0.2.8.0
+                     , lens >= 4.15.4
+                     , text >= 1.2.2.2
+                     , ieee754 >= 0.8.0 && < 0.9
+                     , unordered-containers >= 0.2.8.0
   ghc-options:         -threaded -rtsopts -with-rtsopts=-N
   default-language:    Haskell2010
 
diff --git a/src/Data/FuzzySet/Util.hs b/src/Data/FuzzySet/Util.hs
--- a/src/Data/FuzzySet/Util.hs
+++ b/src/Data/FuzzySet/Util.hs
@@ -1,4 +1,4 @@
-{-# LANGUAGE UnicodeSyntax #-}
+{-# LANGUAGE CPP, UnicodeSyntax #-}
 module Data.FuzzySet.Util
   ( distance
   , enclosedIn
@@ -7,7 +7,9 @@
   , substr
   , ε
   , (<$$>)
+#if !MIN_VERSION_base_unicode_symbols(0,2,3)
   , (−)
+#endif
   , (×)
   ) where
 
@@ -68,11 +70,13 @@
 ε = empty
 {-# INLINE ε #-}
 
+#if !MIN_VERSION_base_unicode_symbols(0,2,3)
 -- | Unicode minus sign symbol. Slightly longer than the hyphen-minus commonly
 --   used, U+2212 aligns naturally with the horizontal bar of the + symbol.
 (−) ∷ Num α ⇒ α → α → α
 (−) = (-)
 {-# INLINE (−) #-}
+#endif
 
 -- | Another unicode operator. This one for multiplication.
 (×) ∷ Num α ⇒ α → α → α