diff --git a/build-constraints.yaml b/build-constraints.yaml
index 6a218f3f..d35fb094 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3047,6 +3047,7 @@ packages:
         - numhask-range
         - perf
         - online
+        - chart-unit
 
     "Iphigenia Df <iphydf@gmail.com> @iphydf":
         - data-msgpack
@@ -3622,7 +3623,9 @@ skipped-tests:
     - bytestring-handle # QuickCheck 2.9
     - case-insensitive # HUnit 1.6
     - cryptohash-sha512 # tasty-quickcheck
+    - diagrams-solve # tasty-quickcheck
     - drawille # hspec 2.4
+    - dual-tree # testing-feat per ghc < 4.10
     - edit-distance # QuickCheck 2.10
     - envy # QuickCheck 2.10
     - exception-transformers # HUnit 1.6