diff --git a/astro.cabal b/astro.cabal
--- a/astro.cabal
+++ b/astro.cabal
@@ -1,7 +1,11 @@
 name:                astro
-version:             0.4.1.2
+version:             0.4.1.3
 synopsis:            Amateur astronomical computations
-description:         Please see README.md
+description:
+    Amateur astronomical computations: rise and set times and azimuths,
+    coordinates, distances, angular sizes and other parameters
+    of the Sun, the Moon, planets and stars.
+
 homepage:            https://github.com/alexander-ignatyev/astro
 license:             BSD3
 license-file:        LICENSE
@@ -42,7 +46,7 @@
                      , Data.Astro.Effects.Aberration
   build-depends:       base >= 4.7 && < 5
                      , time
-                     , matrix
+                     , matrix >= 0.3.4.4
   default-language:    Haskell2010
 
 test-suite astro-test
@@ -71,11 +75,11 @@
   build-depends:       base
                      , astro
                      , time
-                     , test-framework
-                     , test-framework-hunit
-                     , test-framework-quickcheck2
-                     , HUnit
-                     , QuickCheck > 2.0
+                     , test-framework >= 0.8.1.1
+                     , test-framework-hunit >= 0.3.0.2
+                     , test-framework-quickcheck2 >= 0.3.0.3
+                     , HUnit >= 1.3.1.1
+                     , QuickCheck >= 2.8.2
   ghc-options:         -threaded -rtsopts -with-rtsopts=-N
   default-language:    Haskell2010