diff --git a/build-constraints.yaml b/build-constraints.yaml
index 7f2ed5bb..6b8b6dd8 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3703,7 +3703,6 @@ packages:
         - ratel-wai < 0 # GHC 8.4 via base-4.11.0.0
         - regex-applicative-text < 0 # GHC 8.4 via base-4.11.0.0
         - rest-core < 0 # GHC 8.4 via base-4.11.0.0
-        - rest-stringmap < 0 # GHC 8.4 via base-4.11.0.0
         - rest-types < 0 # GHC 8.4 via base-4.11.0.0
         - rethinkdb-client-driver < 0 # GHC 8.4 via base-4.11.0.0
         - schematic < 0 # GHC 8.4 via base-4.11.0.0
@@ -3782,7 +3781,6 @@ packages:
         - flow < 0 # GHC 8.4 via doctest-0.15.0
         - hasmin < 0 # GHC 8.4 via doctest-0.15.0
         - download < 0 # GHC 8.4 via feed
-        - json-schema < 0 # GHC 8.4 via generic-aeson
         - hint < 0 # GHC 8.4 via ghc-8.4.1
         - hmatrix-backprop < 0 # GHC 8.4 via ghc-typelits-knownnat
         - happstack-jmacro < 0 # GHC 8.4 via happstack-server