diff --git a/build-constraints.yaml b/build-constraints.yaml
index 5b701411..d2e7fadb 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -458,7 +458,7 @@ packages:
         - th-lift
         - quickcheck-assertions
 
-        - wai-middleware-consul
+        - wai-middleware-consul < 0
         - wai-middleware-crowd
         - monad-logger-json
         - safe-exceptions
@@ -575,7 +575,7 @@ packages:
     "Stefan Wehr <wehr@factisresearch.com> @skogsbaer":
         - HTF
         - xmlgen
-        - stm-stats
+        - stm-stats < 0
         - large-hashable
 
     "Bart Massey <bart.massey+stackage@gmail.com> @BartMassey":
@@ -1679,9 +1679,9 @@ packages:
         - cabal-file-th < 0 # build failure with GHC 8.4
 
     "Gershom Bazerman <gershomb@gmail.com> @gbaz":
-        - jmacro
-        - jmacro-rpc
-        - jmacro-rpc-snap
+        - jmacro < 0
+        - jmacro-rpc < 0
+        - jmacro-rpc-snap < 0
         - jmacro-rpc-happstack < 0 # GHC 8.4 via happstack-server
 
         - mbox
@@ -2510,7 +2510,7 @@ packages:
         - happstack-jmacro < 0 # GHC 8.4 via happstack-server
         - happstack-server < 0
         - happstack-server-tls < 0 # GHC 8.4 via happstack-server
-        - hsx-jmacro
+        - hsx-jmacro < 0
         - ixset < 0 # GHC 8.4 via syb-with-class
         - reform < 0 # build failure with GHC 8.4
         - reform-blaze < 0 # GHC 8.4 via reform
@@ -2555,9 +2555,9 @@ packages:
         - th-strict-compat
         - main-tester
         - skews
-        - wss-client
+        - wss-client < 0
         - network-messagepack-rpc
-        - network-messagepack-rpc-websocket
+        - network-messagepack-rpc-websocket < 0
         - unicode-show
 
     "Hans-Christian Esperer <hc@hcesperer.org> @hce":
@@ -3508,7 +3508,7 @@ packages:
         - transformers-fix
 
     "Domen Kozar <domen@enlambda.com> @domenkozar":
-        - cachix
+        - cachix < 0
         - cachix-api
         - mixpanel-client
         - pretty-sop
@@ -3548,7 +3548,7 @@ packages:
         - bv-little
 
     "Avi Press <mail@avi.press> @aviaviavi":
-        - curl-runnings
+        - curl-runnings < 0
         - cryptocompare
 
     "Jack Kiefer <jack.c.kiefer@gmail.com> @JackKiefer":
@@ -3573,7 +3573,7 @@ packages:
         - codec-beam
 
     "Chris Parks <christopher.daniel.parks@gmail.com> @cdparks":
-        - closed
+        - closed < 0
 
     "Chris Coffey <chris@foldl.io> @ChrisCoffey":
         - servant-tracing
@@ -3663,14 +3663,14 @@ packages:
         - rocksdb-haskell
         - rocksdb-query
         - haskoin-core
-        - haskoin-node
-        - haskoin-store
+        - haskoin-node < 0
+        - haskoin-store < 0
 
     "asakamirai <asakamirai_hackage@towanowa.net> @asakamirai":
         - kazura-queue
 
     "Eric Torreborre <etorreborre@yahoo.com> @etorreborre":
-        - registry
+        - registry < 0
 
     "Ryota Kameoka <kameoka.ryota@gmail.com> @ryota-ka":
         - duration
@@ -4039,6 +4039,7 @@ skipped-tests:
     - Cabal # GHC 8.4 via base-orphans-0.7, base-orphans-0.7
     - RSA # DRBG-0.5.5 via cipher-aes128-0.7.0.3 via Cabal-2.4
     - aeson # QuickCheck-2.11.3, base-orphans-0.7, hashable-time
+    - atom-conduit
     - attoparsec # QuickCheck-2.11.3
     - barrier # tasty 0.12 and tasty-hunit 0.10
     - binary-parser # tasty-1.0.1.1, tasty-quickcheck-0.10, tasty-hunit-0.10.0.1