diff --git a/Stackage/Snapshot/Diff.hs b/Stackage/Snapshot/Diff.hs
index 95224fd..582e70c 100644
--- a/Stackage/Snapshot/Diff.hs
+++ b/Stackage/Snapshot/Diff.hs
@@ -3,8 +3,6 @@ module Stackage.Snapshot.Diff
   ( getSnapshotDiff
   , snapshotDiff
   , SnapshotDiff
-  , PackageName
-  , Version
   , VersionChange(..)
   ) where