diff --git a/build-constraints.yaml b/build-constraints.yaml
index aaa243b9..0667f7ab 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -900,10 +900,6 @@ packages:
         - kanji
         - microlens-aeson
         - pipes-random
-        - repa
-        - repa-io
-        - repa-algorithms
-        - servant-xml
         - streaming-attoparsec
         - versions
         - vectortiles
@@ -3685,7 +3681,6 @@ packages:
         - palette < 0 # GHC 8.4 via base-4.11.0.0
         - partial-semigroup < 0 # GHC 8.4 via base-4.11.0.0
         - path-text-utf8 < 0 # GHC 8.4 via base-4.11.0.0
-        - perf < 0 # GHC 8.4 via base-4.11.0.0
         # - pipes-random < 0 # GHC 8.4 via base-4.11.0.0
         - pomaps < 0 # GHC 8.4 via base-4.11.0.0
         - posix-paths < 0 # GHC 8.4 via base-4.11.0.0