diff --git a/build-constraints.yaml b/build-constraints.yaml
index 94d0d70d..1008fdd7 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1501,12 +1501,10 @@ skipped-tests:
     - aws
 
     # https://github.com/fpco/stackage/issues/622
-    - ad
     - bound
     - heaps
     - hyphenation
     - machines
-    - fixed-vector
 
     # https://github.com/kaizhang/clustering/issues/2
     - clustering