diff --git a/build-constraints.yaml b/build-constraints.yaml
index 164e7abd..48303092 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4651,6 +4651,10 @@ packages:
         # https://github.com/commercialhaskell/stackage/issues/4592
         - swagger2 < 2.4
 
+        # https://github.com/commercialhaskell/stackage/issues/4594
+        - servant < 0.16.1
+        - servant-server < 0.16.1
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of