diff --git a/sandi.cabal b/sandi.cabal
--- a/sandi.cabal
+++ b/sandi.cabal
@@ -1,5 +1,5 @@
 name: sandi
-version: 0.2
+version: 0.2.1
 license: BSD3
 license-file: LICENSE
 cabal-version: >= 1.8
@@ -24,10 +24,9 @@
     ghc-options: -Wall
     cc-options: -Wall -Wextra
     build-depends:
-        base ==4.6.*,
-        bytestring ==0.10.*,
-        conduit ==1.0.*,
-        resourcet ==0.4.*
+        base >=4.5 && < 4.7,
+        bytestring >=0.9 && < 0.11,
+        conduit ==1.0.*
     exposed-modules:
             Codec.Binary.Base16
             Codec.Binary.Base32