diff --git a/MultipletCombiner.cabal b/MultipletCombiner.cabal
--- a/MultipletCombiner.cabal
+++ b/MultipletCombiner.cabal
@@ -5,7 +5,7 @@
 -- see: https://github.com/sol/hpack
 
 name:           MultipletCombiner
-version:        0.0.5
+version:        0.0.6
 synopsis:       A Haskell implementation for combining SU(n) multiplets
 description:    See README at <https://github.com/mdrslmr/MultipletCombiner>
 category:       physics,library,science,math,groups
@@ -31,7 +31,8 @@
   hs-source-dirs:
       src
   build-depends:
-      base >=4.9 && <5
+      HUnit >=1.6.2.0 && <2
+    , base >=4.9 && <5
   default-language: Haskell2010
 
 test-suite spec
@@ -44,5 +45,6 @@
       src
       tests
   build-depends:
-      base >=4.9 && <5
+      HUnit >=1.6.2.0 && <2
+    , base >=4.9 && <5
   default-language: Haskell2010