diff --git a/bytestring-conversion.cabal b/bytestring-conversion.cabal
--- a/bytestring-conversion.cabal
+++ b/bytestring-conversion.cabal
@@ -1,5 +1,5 @@
 name:                bytestring-conversion
-version:             0.2
+version:             0.2.1
 synopsis:            Type-classes to convert values to and from ByteString.
 license:             OtherLicense
 license-file:        LICENSE
@@ -38,11 +38,11 @@
 
     build-depends:
         base              >= 4.5    && < 5.0
-      , attoparsec        >= 0.10   && < 0.13
-      , bytestring        >= 0.10.4 && < 0.11
-      , case-insensitive  == 1.2.*
-      , double-conversion == 2.0.*
-      , text              >= 0.11   && < 1.2
+      , attoparsec        >= 0.10   && < 1.0
+      , bytestring        >= 0.10.4 && < 1.0
+      , case-insensitive  >= 1.2    && < 2.0
+      , double-conversion >= 2.0    && < 3.0
+      , text              >= 0.11   && < 2.0
 
 test-suite bytestring-conversion-tests
     type:             exitcode-stdio-1.0
@@ -73,6 +73,6 @@
         base
       , bytestring
       , bytestring-conversion
-      , criterion             >= 1.0.0.2 && < 1.1
+      , criterion             >= 1.0.0.2 && < 2.0
       , text
       , transformers