diff --git a/build-constraints.yaml b/build-constraints.yaml
index a0857a58..a3ea56c9 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -6844,6 +6844,7 @@ skipped-tests:
     - dhall # https://github.com/dhall-lang/dhall-haskell/issues/1985
     - mixed-types-num # https://github.com/commercialhaskell/stackage/issues/6005
     - parameterized # # https://github.com/commercialhaskell/stackage/issues/5746
+    - net-mqtt # https://github.com/commercialhaskell/stackage/issues/6099
 
     # Runtime issues
     - blank-canvas # Never finishes https://github.com/ku-fpg/blank-canvas/issues/73