diff --git a/build-constraints.yaml b/build-constraints.yaml
index d16292c5..4e7e0678 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4203,8 +4203,6 @@ packages:
         - timerep < 0 # GHC 8.4 via monoid-subclasses
         - freer-simple < 0 # GHC 8.4 via natural-transformation
         - pcre-heavy < 0 # GHC 8.4 via string-conversions
-        - IntervalMap < 0 # GHC 8.4 via weigh
-        - text-metrics < 0 # GHC 8.4 via weigh
         - fsnotify-conduit < 0 # GHC 8.4 via fsnotify
         - hocilib < 0 # GHC 8.4 via inline-c
         - ctrie < 0 # GHC 8.4 via random-shuffle
@@ -4237,7 +4235,6 @@ packages:
         - opml-conduit < 0 # GHC 8.4 via timerep
         - rss-conduit < 0 # GHC 8.4 via timerep
         - rss-conduit < 0 # GHC 8.4 via vinyl
-        - tar-conduit < 0 # GHC 8.4 via weigh
         - hedgehog-quickcheck < 0 # GHC 8.4 via QuickCheck-2.11.3
         - eventstore < 0 # GHC 8.4 via ekg-core
         - log-warper < 0 # GHC 8.4 via fmt