diff --git a/blosum.cabal b/blosum.cabal
--- a/blosum.cabal
+++ b/blosum.cabal
@@ -1,7 +1,7 @@
 name:                blosum
-version:             0.1.1.3
+version:             0.1.1.4
 synopsis:            BLOSUM generator
-description:         Please see README.md
+description:         Generates BLOSUMs for use with finding the degree of amino acid conservation.
 homepage:            http://github.com/GregorySchwartz/blosum#readme
 license:             GPL-2
 license-file:        LICENSE
@@ -20,7 +20,7 @@
                      , Cluster
                      , Matrix
                      , Print
-  build-depends:       base >= 4.7 && < 5
+  build-depends:       base >= 4.9 && < 5
                      , containers
                      , text
                      , text-show
@@ -40,7 +40,7 @@
                      , split
                      , pipes
                      , pipes-text
-                     , optparse-applicative
+                     , optparse-applicative >=0.13
   default-language:    Haskell2010
 
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