diff --git a/tests/vector-tests.cabal b/tests/vector-tests.cabal
index b89f0fbc81c7b1fcc1eab2b9b1b0526d1d15f0c1..e8c313f5cd5f8d91d4c42b81823897ec406f830d 100644
--- a/tests/vector-tests.cabal
+++ b/tests/vector-tests.cabal
@@ -27,7 +27,7 @@ Executable "vector-tests"
               TypeFamilies,
               TemplateHaskell
 
-  Build-Depends: base, template-haskell, vector, random,
+  Build-Depends: base >= 4 && < 5, template-haskell, vector, random,
                  QuickCheck >= 2, test-framework, test-framework-quickcheck2
 
   -- Don't let fusion occur or GHC will make our tests less informative in some cases :-)