diff --git a/build-constraints.yaml b/build-constraints.yaml
index bd58e505..624340d7 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3439,7 +3439,7 @@ packages:
         - wild-bind < 0 # BuildFailureException Process exited with ExitFailure 1: ./Setup build
         - wild-bind-x11 < 0 # DependencyFailed (PackageName "wild-bind")
         - xls < 0 # DependencyFailed (PackageName "getopt-generics")
-        # highjson < 0 # BuildFailureException Process exited with ExitFailure 1: ./Setup build
+        - highjson < 0 # BuildFailureException Process exited with ExitFailure 1: ./Setup build
         - model < 0 # BuildFailureException Process exited with ExitFailure 1: ./Setup build
         - quickcheck-state-machine < 0 # BuildFailureException Process exited with ExitFailure 1: ./Setup build
         - stateWriter < 0 # BuildFailureException Process exited with ExitFailure 1: ./Setup build
@@ -3826,8 +3826,8 @@ packages:
         - servant-elm < 0 # GHC 8.4 via servant
         - servant-purescript < 0 # mainland-pretty <- srcloc
         - pipes-text < 0 # GHC 8.4 via streaming-commons-0.2.0.0
-        # highjson-swagger < 0 # GHC 8.4 via swagger2
-        # highjson-th < 0 # GHC 8.4 via swagger2
+        - highjson-swagger < 0 # GHC 8.4 via swagger2
+        - highjson-th < 0 # GHC 8.4 via swagger2
         # hledger-api < 0 # GHC 8.4 via swagger2
         - teardown < 0 # GHC 8.4 via tasty-rerun
         - wrecker < 0 # GHC 8.4 via tdigest