diff --git a/relation.cabal b/relation.cabal
--- a/relation.cabal
+++ b/relation.cabal
@@ -1,39 +1,39 @@
-cabal-version:      2.2
+cabal-version:        2.2
 
-name:               relation
-version:            0.5.1.0
-synopsis:           A data structure representing Relations on Sets.
-description:        A library to model relationships between two objects that are subclasses of Ord.
+name:                 relation
+version:              0.5.2.0
+synopsis:             A data structure representing Relations on Sets.
+description:          A library to model relationships between two objects that are subclasses of Ord.
 
-                    We use a two Maps that allows fast searching either by the key element or the value element.
-homepage:           https://www.github.com/haskell-works/relation/
-bug-reports:        https://www.github.com/haskell-works/relation/issues
-license:            BSD-3-Clause
-license-file:       LICENSE
-author:             Leonel Fonseca
-maintainer:         John Ky
-copyright:          (C) 2019 John Ky,
-                    (C) 2012 Drew Day,
-                    (C) 2010 Leonel Fonseca
-category:           Data Structures
-stability:          Experimental
-build-type:         Simple
-tested-with:        GHC == 8.2.2, GHC == 8.4.4, GHC == 8.6.5, GHC == 8.8.3
-extra-source-files: LICENSE
-                    README.md
+                      We use a two Maps that allows fast searching either by the key element or the value element.
+homepage:             https://www.github.com/haskell-works/relation/
+bug-reports:          https://www.github.com/haskell-works/relation/issues
+license:              BSD-3-Clause
+license-file:         LICENSE
+author:               Leonel Fonseca
+maintainer:           John Ky
+copyright:            (C) 2019-2020 John Ky,
+                      (C) 2012 Drew Day,
+                      (C) 2010 Leonel Fonseca
+category:             Data Structures
+stability:            Experimental
+build-type:           Simple
+tested-with:          GHC == 8.10.1, GHC == 8.8.3, GHC == 8.6.5, GHC == 8.4.4
+extra-source-files:   LICENSE
+                      README.md
 
 source-repository head
   type:     git
   location: https://www.github.com/haskell-works/relation
 
-common base                 { build-depends: base                 >= 4          && < 5      }
+common base                     { build-depends: base                     >= 4.11       && < 5      }
 
-common containers           { build-depends: containers           >= 0.5        && < 0.7    }
-common doctest              { build-depends: doctest              >= 0.16.2     && < 0.17   }
-common doctest-discover     { build-depends: doctest-discover     >= 0.2        && < 0.3    }
-common hedgehog             { build-depends: hedgehog             >= 0.5        && < 1.1    }
-common hspec                { build-depends: hspec                >= 2.4        && < 3      }
-common hw-hspec-hedgehog    { build-depends: hw-hspec-hedgehog    >= 0.1.0.4    && < 0.2    }
+common containers               { build-depends: containers               >= 0.5        && < 0.7    }
+common doctest                  { build-depends: doctest                  >= 0.16.2     && < 0.17   }
+common doctest-discover         { build-depends: doctest-discover         >= 0.2        && < 0.3    }
+common hedgehog                 { build-depends: hedgehog                 >= 0.5        && < 1.1    }
+common hspec                    { build-depends: hspec                    >= 2.4        && < 3      }
+common hw-hspec-hedgehog        { build-depends: hw-hspec-hedgehog        >= 0.1.0.4    && < 0.2    }
 
 common relation
   build-depends: relation