diff --git a/build-constraints.yaml b/build-constraints.yaml
index 1e095d60..f6778e6f 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -765,21 +765,21 @@ packages:
 
     "Brent Yorgey <byorgey@gmail.com> @byorgey":
         - active
-        - diagrams < 0 # via diagrams-contrib
+        - diagrams
         - diagrams-builder < 0 # via lens-4.17
         - diagrams-cairo < 0 # via lens-4.17
         - diagrams-canvas < 0 # via lens-4.17
-        - diagrams-contrib < 0 # via lens-4.17
+        - diagrams-contrib
         - diagrams-core
         - diagrams-gtk < 0 # via diagrams-cairo
         - diagrams-html5 < 0 # via lens-4.17
         - diagrams-lib
         - diagrams-postscript < 0 # via lens-4.17
-        - diagrams-rasterific < 0 # via lens-4.17
+        - diagrams-rasterific
         - diagrams-solve
         - diagrams-svg
-        - force-layout < 0 # via lens-4.17
-        - SVGFonts < 0 # via diagrams-core
+        - force-layout
+        - SVGFonts
         - haxr < 0 # GHC 8.4 via HaXml
         - MonadRandom
         - monoid-extras
@@ -4072,6 +4072,7 @@ skipped-tests:
     - cabal-install # tasty 1.1
     - colour # QuickCheck-2.11.3
     - drawille # hspec 2.4
+    - diagrams-contrib # QuickCheck 2.12, containers 0.6
     - ed25519 # QuickCheck, hlint and more
     - exact-pi # QuickCHeck 2.12, tasty-1.2
     - hackage-security # QuickCheck