diff --git a/build-constraints.yaml b/build-constraints.yaml
index 384c49b1..945510a4 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -10,7 +10,7 @@ cabal-format-version: "2.4"
 # Constraints for brand new builds
 packages:
     "Geoffrey Mainland <mainland@drexel.edu> @mainland":
-        - exception-mtl
+        - exception-mtl[B
         - exception-transformers
         - mainland-pretty
         - ref-fd
@@ -4344,7 +4344,7 @@ packages:
         - network-byte-order
         - network-info
         - network-ip
-        - network-uri
+        - network-uri < 2.7.0.0 # https://github.com/commercialhaskell/stackage/issues/5116
         - newtype
         - nicify-lib
         - old-locale