diff --git a/build-constraints.yaml b/build-constraints.yaml
index c83b0b67..be108193 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3985,6 +3985,7 @@ expected-test-failures:
     - language-lua2 # https://github.com/mitchellwrosen/language-lua2/issues/4
     - picosat # https://github.com/fpco/stackage/pull/2382
     - pkcs10 # https://github.com/fcomb/pkcs10-hs/issues/2
+    - servant-ruby # https://github.com/fpco/stackage/issues/3600
     - sourcemap # https://github.com/chrisdone/sourcemap/issues/3
     - text-icu # https://github.com/bos/text-icu/issues/32
     - text-ldap # https://github.com/khibino/haskell-text-ldap/issues/1