diff --git a/build-constraints.yaml b/build-constraints.yaml
index bb598094..a9238242 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1306,11 +1306,11 @@ packages:
         - bank-holidays-england
 
     "Haskell Servant <jkarni@gmail.com>":
-        - servant
-        - servant-client
+        - servant < 0.16
+        - servant-client < 0.16
         - servant-docs
         - servant-js
-        - servant-server
+        - servant-server < 0.16
         - servant-lucid
         - servant-blaze
         - servant-foreign
@@ -4116,7 +4116,7 @@ packages:
         - scientific
         - securemem
         - serialise
-        - servant-client-core
+        - servant-client-core < 0.16
         - setenv
         - shakespeare
         - shell-escape