diff --git a/build-constraints.yaml b/build-constraints.yaml
index 7383622c..6f84dd1b 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -6423,7 +6423,6 @@ skipped-tests:
     - quickcheck-state-machine
     - rakuten
     - rank1dynamic
-    - rcu
     - rss-conduit
     - servant-auth-server
     - servant-blaze
@@ -7010,7 +7009,6 @@ skipped-benchmarks:
     - lifted-async
     - lifted-base
     - loop
-    - machines
     - matrices
     - matrix
     - megaparsec
@@ -7026,7 +7024,6 @@ skipped-benchmarks:
     - prettyprinter
     - prometheus-client
     - ramus
-    - rcu
     - reinterpret-cast
     - rng-utils
     - sampling