diff --git a/build-constraints.yaml b/build-constraints.yaml
index 03886f7f..0c0e7c05 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4250,10 +4250,10 @@ packages:
 
     "Hiromi Ishii <konn.jinro@gmail.com> @konn":
         - equational-reasoning
-        - ghc-typelits-presburger < 0 # ghc 8.10.1 https://github.com/commercialhaskell/stackage/issues/5438
-        - singletons-presburger < 0 # via ghc-typelits-presburger
-        - type-natural < 0 # ghc 8.10
-        - sized < 0 # ghc 8.10
+        - ghc-typelits-presburger
+        - singletons-presburger
+        - type-natural
+        - sized
 
     "Frank Doepper <stackage@woffs.de> @woffs":
         - amqp-utils