diff --git a/wkt-geom.cabal b/wkt-geom.cabal
--- a/wkt-geom.cabal
+++ b/wkt-geom.cabal
@@ -1,5 +1,5 @@
 name:                  wkt-geom
-version:               0.0.6
+version:               0.0.7
 synopsis:              A parser of WKT, WKB and eWKB.
 description:           Well Known Text (WKT), Well Known Binary (WKB) and the PostgreSQL extension Extended Well Know Binary (eWKB) are vector geometry representations.
                      .
@@ -83,11 +83,11 @@
                      , bytestring        >= 0.10
                      , containers        >= 0.5.10.1
                      , geojson           >= 3.0.3
-                     , hedgehog
-                     , hspec
-                     , hw-hspec-hedgehog
-                     , lens
-                     , QuickCheck
+                     , hedgehog          >= 0.5 && < 0.7
+                     , hspec             >= 2.4 && < 3  
+                     , hw-hspec-hedgehog >= 0.1.0.4 && < 0.2
+                     , lens              >= 4 && < 4.18
+                     , QuickCheck        > 2.7 && < 2.13
                      , scientific        >= 0.3.6
                      , trifecta          >= 1.7
                      , vector            >= 0.10