diff --git a/lib/hs/Thrift.cabal b/lib/hs/Thrift.cabal
index 6f6a150..fd3f692 100644
--- a/lib/hs/Thrift.cabal
+++ b/lib/hs/Thrift.cabal
@@ -40,7 +40,7 @@
   Hs-Source-Dirs:
     src
   Build-Depends:
-    base >= 4, base < 5, containers, ghc-prim, attoparsec, binary, bytestring >= 0.10, base64-bytestring, hashable, HTTP, text, unordered-containers, vector, QuickCheck, split
+    base >= 4, base < 5, containers, ghc-prim, attoparsec, binary, bytestring >= 0.10, base64-bytestring, hashable, HTTP, text, unordered-containers >= 0.2.6, vector, QuickCheck >= 2.8.2, split
   if flag(network-uri)
      build-depends: network-uri >= 2.6, network >= 2.6
   else
@@ -77,4 +77,4 @@
   Hs-Source-Dirs: test
   Ghc-Options: -Wall
   main-is: Spec.hs
-  Build-Depends: base, thrift, hspec, QuickCheck, bytestring >= 0.10, unordered-containers
+  Build-Depends: base, thrift, hspec, QuickCheck >= 2.8.2, bytestring >= 0.10, unordered-containers >= 0.2.6