diff --git a/Stackage/Config.hs b/Stackage/Config.hs
index 5e1ee841..7f63b24a 100644
--- a/Stackage/Config.hs
+++ b/Stackage/Config.hs
@@ -430,6 +430,9 @@ defaultStablePackages ghcVer requireHP = unPackageMap $ execWriter $ do
     -- https://github.com/fpco/stackage/issues/235
     addRange "Michael Snoyman" "entropy" "< 0.3"
 
+    -- https://github.com/fpco/stackage/issues/236
+    addRange "Michael Snoyman" "attoparsec" "< 0.12"
+
     -- Requires too new a version of text
     when (ghcVer == GhcMajorVersion 7 4 && requireHP) $ do
         addRange "Michael Snoyman" "attoparsec" "< 0.11.2.1"