diff --git a/libraries/ghc-experimental/src/Data/Sum/Experimental.hs b/libraries/ghc-experimental/src/Data/Sum/Experimental.hs
index 3292cadcb651747a8d2621710153bdff27e59a31..62a692d6894250cda79e280d7701312eb0eca247 100644
--- a/libraries/ghc-experimental/src/Data/Sum/Experimental.hs
+++ b/libraries/ghc-experimental/src/Data/Sum/Experimental.hs
@@ -80,4 +80,5 @@ module Data.Sum.Experimental (
   Sum63#,
 ) where
 
+import GHC.Num.BigNat () -- for build ordering
 import GHC.Types
diff --git a/libraries/ghc-experimental/src/Data/Tuple/Experimental.hs b/libraries/ghc-experimental/src/Data/Tuple/Experimental.hs
index 7eff83376b00f2d9e5a485d06e5b526e38900c08..4d20de44b94601ec759aedf2acdc05aa83389344 100644
--- a/libraries/ghc-experimental/src/Data/Tuple/Experimental.hs
+++ b/libraries/ghc-experimental/src/Data/Tuple/Experimental.hs
@@ -161,3 +161,4 @@ module Data.Tuple.Experimental (
 import GHC.Tuple
 import GHC.Types
 import GHC.Classes
+import GHC.Num.BigNat () -- for build ordering