diff --git a/build-constraints.yaml b/build-constraints.yaml
index 5a115537..9858f940 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -675,19 +675,19 @@ packages:
         - rank2classes
 
     "Brent Yorgey <byorgey@gmail.com> @byorgey":
-        - active < 0 # GHC 8.4 via base-4.11.0.0
+        - active
         # - diagrams # lens 4.16
         # - diagrams-builder # haskell-src-exts
-        # - diagrams-cairo # lens 4.16
-        # - diagrams-contrib # lens 4.16
-        # - diagrams-core # lens 4.16
-        # - diagrams-lib # lens 4.16
-        # - diagrams-rasterific # lens 4.16
-        # - diagrams-svg # lens 4.16
-        - force-layout < 0 # GHC 8.4 via base-4.11.0.0
+        - diagrams-cairo
+        - diagrams-contrib
+        - diagrams-core
+        - diagrams-lib
+        - diagrams-rasterific
+        - diagrams-svg
+        - force-layout
         - haxr < 0 # GHC 8.4 via HaXml
         - MonadRandom
-        - monoid-extras < 0 # GHC 8.4 via base-4.11.0.0
+        - monoid-extras
 
     "Vincent Berthoux <vincent.berthoux@gmail.com> @Twinside":
         - JuicyPixels
@@ -891,7 +891,7 @@ packages:
         - hweblib
 
     "Joachim Breitner <mail@joachim-breitner.de> @nomeata":
-        - circle-packing < 0 # GHC 8.4 via base-4.11.0.0
+        - circle-packing
         - haskell-spacegoo
         - tasty-expected-failure
 
@@ -1239,7 +1239,7 @@ packages:
     "Jeffrey Rosenbluth <jeffrey.rosenbluth@gmail.com> @jeffreyrosenbluth":
         - palette < 0 # GHC 8.4 via base-4.11.0.0
         # - diagrams-canvas # lens 4.16
-        - svg-builder < 0 # GHC 8.4 via base-4.11.0.0
+        - svg-builder
 
     "Gabríel Arthúr Pétursson <gabriel@system.is> @polarina":
         - sdl2