diff --git a/build-constraints.yaml b/build-constraints.yaml
index 0ebeb1a9..bf9c5017 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -89,7 +89,7 @@ packages:
         - Sit
 
         - alex > 3.2.7
-        - happy < 1.20.1 || >= 1.20.1.1 && < 1.21 || > 1.21.0
+        - happy < 1.21.0 || > 1.21.0
         - haskell-src
         - ListLike
         - MissingH
@@ -1315,7 +1315,7 @@ packages:
         - sorted-list
 
     "Gabriella Gonzalez <GenuineGabriella@gmail.com> @Gabriella439":
-        - optparse-generic < 1.5.0 # https://github.com/commercialhaskell/stackage/issues/6968
+        - optparse-generic
         - pipes
         - pipes-extras
         - pipes-http
@@ -1595,7 +1595,7 @@ packages:
         - generic-aeson
         - parameterized
         - tracing-control
-        - primitive-unlifted < 0.2 || > 1.0.0.0
+        - primitive-unlifted < 1.0.0.0 || > 1.0.0.0
         - stm-lifted
         - monad-primitive
         - mwc-random-monad
@@ -2561,7 +2561,7 @@ packages:
         - chaselev-deque
         - code-page
         - constraint-tuples
-        - criterion  < 1.6.2.0 # https://github.com/commercialhaskell/stackage/issues/6986
+        - criterion
         - criterion-measurement
         - data-reify
         - deriving-compat
@@ -3217,7 +3217,7 @@ packages:
         - irc-dcc
 
     "Alexey Raga <alexey.raga@gmail.com> @AlexeyRaga":
-        - hw-kafka-client < 4.0.4 # https://github.com/commercialhaskell/stackage/issues/6388
+        - hw-kafka-client
 
     "John Ky newhoggy@gmail.com @newhoggy":
         - aeson-lens
@@ -4826,7 +4826,7 @@ packages:
 
     "Arnaud Spiwack <arnaud.spiwack@tweag.io> @aspiwack":
         - linear-base
-        - linear-generics < 0.2.2 # 0.2.2 depends on th-abstraction 5.0.0. See https://github.com/commercialhaskell/stackage/issues/6897
+        - linear-generics
 
     "Ollie Charles <ollie@ocharles.org.up> @ocharles":
         - reactive-banana
@@ -5404,7 +5404,7 @@ packages:
         - scale
         - scientific
         - securemem
-        - selective < 0.6.1 || > 0.6.1
+        - selective
         - semialign
         - serialise
         - servant-client-core
@@ -5482,8 +5482,8 @@ packages:
         - th-lift-instances
         - th-utilities
         - these
-        - these-lens < 1.0.1 || > 1.0.1
-        - these-optics < 1.0.1 || > 1.0.1
+        - these-lens
+        - these-optics
         - threads
         - threads-extras
         - thyme