diff --git a/build-constraints.yaml b/build-constraints.yaml
index baf85ed5..63ce00df 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -737,7 +737,7 @@ packages:
         - vector-instances
         - void
         - wl-pprint-extras < 0
-        - wreq < 0
+        - wreq
         - wl-pprint-terminfo < 0
         - zippers
         - zlib-lens
@@ -1968,7 +1968,7 @@ packages:
         - bencode
         - hsebaysdk
         - dockerfile
-        - wai-middleware-throttle < 0 # GHC 8.4 via token-bucket
+        - wai-middleware-throttle
         # - yesod-auth-basic # https://github.com/creichert/yesod-auth-basic/issues/2
 
     "Hirotomo Moriwaki <philopon.dependence@gmail.com> @philopon":
@@ -2445,7 +2445,7 @@ packages:
 
     "David Wiltshire <david.wiltshire@metark.com> @dave77":
         # on behalf of Alexey Karakulov @w3rs
-        - hashable-time < 0 # GHC 8.4 via base-4.11.0.0
+        - hashable-time
 
     "Yuras Shumovich <shumovichy@gmail.com> @Yuras":
         - pdf-toolbox-content < 0 # DependencyFailed (PackageName "pdf-toolbox-core")
@@ -2519,8 +2519,8 @@ packages:
 
     "Mihaly Barasz klao@nilcons.com @klao":
         - lens-datetime
-        - tz < 0
-        - tzdata < 0
+        - tz
+        - tzdata
 
     "Timothy Klim <stackage@timothyklim.com> @TimothyKlim":
         - pkcs10
@@ -3201,7 +3201,7 @@ packages:
         - tsv2csv
 
     "Thomas Sutton <me@thomas-sutton.id.au> @thsutton":
-        - aeson-diff < 0
+        - aeson-diff
         - edit-distance-vector
 
     "Kyle Van Berendonck <kvanberendonck+stackage@gmail.com> @donkeybonks":
@@ -3726,7 +3726,7 @@ packages:
 
     "Rob Rix <robrix@github.com> @robrix":
         - fused-effects
-        
+
     "Josef Thorne <joseft.168@gmail.com> @Grendel-Grendel-Grendel":
         - focuslist
 
@@ -3780,7 +3780,6 @@ packages:
         - Unique < 0 # GHC 8.4 via base-4.11.0.0
         - ghc-compact < 0 # GHC 8.4 via base-4.11.1.0
         - hastache < 0 # GHC 8.4 via base-4.11.0.0
-        - token-bucket < 0 # GHC 8.4 via base-4.11.0.0
         - attoparsec-time < 0 # GHC 8.4 via doctest-0.15.0
         - syb-with-class < 0 # GHC 8.4 via template-haskell-2.13.0.0