diff --git a/build-constraints.yaml b/build-constraints.yaml
index 81f58d41..bb38812b 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -658,7 +658,7 @@ packages:
     "Mario Blazevic <blamario@yahoo.com> @blamario":
         - monad-parallel
         - monad-coroutine
-        - incremental-parser < 0 # BuildFailureException Process exited with ExitFailure 1: ./Setup build
+        - incremental-parser
         - monoid-subclasses
         - picoparsec < 0 # BuildFailureException Process exited with ExitFailure 1: ./Setup build
         - rank2classes
@@ -889,7 +889,7 @@ packages:
         - HandsomeSoup
 
     "Clint Adams <clint@debian.org> @clinty":
-        - hOpenPGP < 0 # GHC 8.4 via ixset-typed
+        - hOpenPGP
         - openpgp-asciiarmor
         - MusicBrainz
         - DAV
@@ -3361,7 +3361,6 @@ packages:
         - postgresql-simple < 0 # GHC 8.4 via base-4.11.0.0
         - postgresql-simple-url < 0 # GHC 8.4 via base-4.11.0.0
         - classyplate < 0 # GHC 8.4 via template-haskell-2.13.0.0
-        - ixset-typed < 0 # GHC 8.4 via template-haskell-2.13.0.0
         - hastache < 0 # GHC 8.4 via base-4.11.0.0
         - token-bucket < 0 # GHC 8.4 via base-4.11.0.0
         - attoparsec-time < 0 # GHC 8.4 via doctest-0.15.0