diff --git a/build-constraints.yaml b/build-constraints.yaml
index 9a2e2f67..98da9a92 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -30,7 +30,7 @@ packages:
         - th-printf
 
     "Christian Marie <christian@ponies.io> @christian-marie":
-        - git-vogue
+        - git-vogue < 0 # via stylish-haskell
 
     "Manuel Bärenz <programming@manuelbaerenz.de> @turion":
         - dunai
@@ -493,7 +493,7 @@ packages:
     "Jasper Van der Jeugt @jaspervdj":
         - blaze-html
         - blaze-markup
-        - stylish-haskell
+        - stylish-haskell < 0 # via aeson-1.4.0.0
         # - profiteur # js-jquery 3.3
         - psqueues
         - websockets
@@ -1003,7 +1003,7 @@ packages:
         - rest-snap < 0 # GHC 8.4 via rest-core
         # - rest-gen # haskell-src-exts
         # - rest-happstack # haskell-src-exts via rest-gen
-        - rest-stringmap
+        - rest-stringmap < 0 # via aeson-1.4.0.0
         - rest-types < 0 # GHC 8.4 via base-4.11.0.0
         # - rest-wai # http-types 0.12
         - tostring
@@ -1052,8 +1052,8 @@ packages:
         - wai-middleware-caching-lru
         - wai-middleware-caching-redis < 0 # GHC 8.4 via hedis
         # not package maintainer
-        - ekg
-        - ekg-json
+        - ekg < 0 # via aeson-1.4.0.0
+        - ekg-json < 0 # via aeson-1.4.0.0
 
     "Paul Rouse <pgr@doynton.org> @paul-rouse":
         - mysql
@@ -1334,7 +1334,7 @@ packages:
         - microformats2-parser
         - hspec-expectations-pretty-diff
         - wai-cli
-        - magicbane
+        - magicbane < 0 # via ekg-wai
 
     "Francesco Mazzoli <f@mazzo.li> @bitonic":
         - language-c-quote
@@ -1684,14 +1684,14 @@ packages:
         - autoexporter
         - derulo
         - flow
-        - github-release
+        - github-release < 0 # via aeson-1.4.0.0
         - json-feed
         - lackey
-        - ratel
-        - ratel-wai
+        - ratel < 0 # via aeson-1.4.0.0
+        - ratel-wai < 0 # via ratel
         - rattletrap
         - salve
-        - strive
+        - strive < 0 # via aeson-1.4.0.0
         - wuss
 
         - bmp # @benl23x5
@@ -2058,7 +2058,7 @@ packages:
         - misfortune < 0 # GHC 8.4 via random-fu
 
     "Timo von Holtz <tvh@tvholtz.de> @tvh":
-        - ekg-wai
+        - ekg-wai < 0 # via ekg-json
         # - haxl-amazonka # http-conduit 2.3 via amazonka
         - hasql-migration < 0 # https://github.com/tvh/hasql-migration/issues/4
         - servant-JuicyPixels
@@ -2386,7 +2386,7 @@ packages:
         - pusher-http-haskell < 0 # GHC 8.4 via base-4.11.0.0
 
     "Yorick Laupa yo.eight@gmail.com @YoEight":
-        - eventstore
+        - eventstore < 0 # via aeson-1.4.0.0
         - dotnet-timespan
         - eventsource-api < 0 # GHC 8.4 build failure
         - eventsource-geteventstore-store < 0 # GHC 8.4 via protolude
@@ -3293,7 +3293,7 @@ packages:
         - time-locale-vietnamese
 
     "Tim McGilchrist <timmcgil@gmail.com>  @tmcgilchrist":
-        - riak
+        - riak < 0 # via aeson-1.4.0.0
         - riak-protobuf
         - airship < 0 # GHC 8.4 via http-media
         - hedgehog-corpus
@@ -3468,7 +3468,7 @@ packages:
         - yesod-text-markdown
 
     "Alexander Krupenkin <mail@akru.me> @akru":
-        - web3
+        - web3 < 0 # via aeson-1.4.0.0
 
     "Georg Rudoy <0xd34df00d@gmail.com> @0xd34df00d":
         - enum-subset-generate
@@ -3567,9 +3567,6 @@ packages:
         # https://github.com/fpco/stackage/issues/3566
         - network < 2.7
 
-        # https://github.com/commercialhaskell/stackage/issues/3728
-        - aeson < 1.4
-
         # https://github.com/commercialhaskell/stackage/issues/3751
         - require < 0.3.1