diff --git a/build-constraints.yaml b/build-constraints.yaml
index 219ce188..fbd346bf 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1261,7 +1261,7 @@ packages:
         # - magicbane # https://github.com/myfreeweb/magicbane/issues/9
 
     "Francesco Mazzoli <f@mazzo.li> @bitonic":
-        - language-c-quote < 0 # GHC 8.4 via exception-transformers
+        - language-c-quote
 
     "Sönke Hahn <soenkehahn@gmail.com> @soenkehahn":
         - generics-eot
@@ -3378,7 +3378,6 @@ packages:
         - crackNum < 0 # BuildFailureException Process exited with ExitFailure 1: ./Setup build
         - prim-array < 0 # BuildFailureException Process exited with ExitFailure 1: ./Setup build
         - quickcheck-classes < 0 # DependencyFailed (PackageName "prim-array")
-        - srcloc < 0 # BuildFailureException Process exited with ExitFailure 1: ./Setup build
         - xmonad < 0 # BuildFailureException Process exited with ExitFailure 1: ./Setup build
         - xxhash < 0 # BuildFailureException Process exited with ExitFailure 1: ./Setup build
         - Unique < 0 # GHC 8.4 via base-4.11.0.0
@@ -3392,11 +3391,9 @@ packages:
         - attoparsec-time < 0 # GHC 8.4 via doctest-0.15.0
         - hint < 0 # GHC 8.4 via ghc-8.4.1
         - syb-with-class < 0 # GHC 8.4 via template-haskell-2.13.0.0
-        - exception-mtl < 0 # GHC 8.4 via exception-transformers
         - consul-haskell < 0 # GHC 8.4 via uuid
         - hasql-transaction < 0 # GHC 8.4 via hasql
         - language-ecmascript < 0 # wl-pprint
-        - mainland-pretty < 0
 
     "GHC upper bounds":
         # Need to always match the version shipped with GHC