diff --git a/build-constraints.yaml b/build-constraints.yaml
index 1eae4a8f..61cc143d 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -8661,34 +8661,16 @@ package-flags:
     jsaddle:
         gtk3: true
 
-    ghc-heap-view:
-        ghc_7_7: false
-        ghc_8_0: true
-
     functor-classes-compat:
         containers: true
 
-    # 2023-06
-    # Since we are shipping Win32-2.12.0.1 (thus not 2.13.1), this flag needs to be set to 'false'.
-    # https://github.com/RyanGlScott/mintty/issues/4#issuecomment-968329124
-    # TODO: revisit when Win32 is bumped
-    mintty:
-        win32-2-13-1: false
-
-    cassava:
-        bytestring--lt-0_10_4: false
-
     alerta:
         servant-client-core: false
 
     cabal-install:
-        # https://github.com/haskell/cabal/issues/4883
+        # https://github.com/haskell/cabal/issues/9054
         native-dns: false
 
-    # https://github.com/fpco/stackage/issues/3619
-    transformers-compat:
-        five-three: true
-
     greskell:
         server-test: false