diff --git a/build-constraints.yaml b/build-constraints.yaml
index 2bd1e888..afd6615f 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -356,11 +356,8 @@ packages:
         - BlogLiterately
         - BlogLiterately-diagrams
         - diagrams
-
-        # https://github.com/fpco/stackage/issues/443
-        #- diagrams-builder
-        #- diagrams-haddock
-
+        - diagrams-builder
+        - diagrams-haddock
         - diagrams-contrib
         - diagrams-core
         - diagrams-lib