diff --git a/build-constraints.yaml b/build-constraints.yaml
index ee4aae21..8c7b5601 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -5165,7 +5165,7 @@ packages:
         - test-framework-th
         - testing-feat
         - testing-type-modifiers
-        - text-icu < 0.8
+        - text-icu < 0.8 # https://github.com/commercialhaskell/stackage/issues/6430
         - text-latin1
         - text-postgresql
         - text-printer
@@ -6116,7 +6116,6 @@ packages:
         - elm-street < 0 # tried elm-street-0.1.0.4, but its *executable* does not support: servant-0.19
         - elm-street < 0 # tried elm-street-0.1.0.4, but its *executable* does not support: servant-server-0.19
         - elm-street < 0 # tried elm-street-0.1.0.4, but its *library* does not support: base-4.16.1.0
-        - email-validate < 0 # tried email-validate-2.3.2.15, but its *library* does not support: template-haskell-2.18.0.0
         - emd < 0 # tried emd-0.2.0.0, but its *library* requires the disabled package: typelits-witnesses
         - envy < 0 # tried envy-2.1.0.0, but its *library* does not support: bytestring-0.11.3.0
         - epub-metadata < 0 # tried epub-metadata-4.5, but its *library* requires the disabled package: regex-compat-tdfa
@@ -6695,7 +6694,6 @@ packages:
         - katip-rollbar < 0 # tried katip-rollbar-0.3.0.1, but its *library* does not support: time-1.11.1.1
         - katip-scalyr-scribe < 0 # tried katip-scalyr-scribe-0.1.0.1, but its *library* does not support: aeson-2.0.3.0
         - katip-scalyr-scribe < 0 # tried katip-scalyr-scribe-0.1.0.1, but its *library* does not support: katip-0.8.7.0
-        - kind-generics-th < 0 # tried kind-generics-th-0.2.2.2, but its *library* does not support: template-haskell-2.18.0.0
         - koji < 0 # tried koji-0.0.2, but its *library* requires the disabled package: haxr
         - koofr-client < 0 # tried koofr-client-1.0.0.3, but its *library* does not support: aeson-2.0.3.0
         - kraken < 0 # tried kraken-0.1.0, but its *library* does not support: base-4.16.1.0
@@ -7501,7 +7499,6 @@ packages:
         - tonatona-servant < 0 # tried tonatona-servant-0.1.0.4, but its *library* does not support: servant-server-0.19
         - tonatona-servant < 0 # tried tonatona-servant-0.1.0.4, but its *library* does not support: wai-extra-3.1.8
         - tracing < 0 # tried tracing-0.0.7.2, but its *library* does not support: time-1.11.1.1
-        - tracing-control < 0 # tried tracing-control-0.0.7.2, but its *library* does not support: time-1.11.1.1
         - transformers-bifunctors < 0 # tried transformers-bifunctors-0.1, but its *library* does not support: mmorph-1.2.0
         - transformers-lift < 0 # tried transformers-lift-0.2.0.2, but its *library* does not support: base-4.16.1.0
         - transformers-lift < 0 # tried transformers-lift-0.2.0.2, but its *library* does not support: writer-cps-transformers-0.5.6.1
@@ -7572,7 +7569,6 @@ packages:
         - wai-routing < 0 # tried wai-routing-0.13.0, but its *library* requires the disabled package: wai-predicates
         - wai-routing < 0 # tried wai-routing-0.13.0, but its *library* requires the disabled package: wai-route
         - wai-saml2 < 0 # tried wai-saml2-0.2.1.2, but its *library* does not support: bytestring-0.11.3.0
-        - wai-session-redis < 0 # tried wai-session-redis-0.1.0.4, but its *library* does not support: bytestring-0.11.3.0
         - wai-transformers < 0 # tried wai-transformers-0.1.0, but its *library* requires the disabled package: monad-control-aligned
         - wavefront < 0 # tried wavefront-0.7.1.4, but its *library* does not support: attoparsec-0.14.4
         - wavefront < 0 # tried wavefront-0.7.1.4, but its *library* does not support: base-4.16.1.0