diff --git a/build-constraints.yaml b/build-constraints.yaml
index ec2c1ece..69016aab 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3383,7 +3383,7 @@ packages:
 
     "GHC upper bounds":
         # Need to always match the version shipped with GHC
-        - Win32 == 2.5.4.1
+        - Win32 == 2.6.1.0
 
     "Stackage upper bounds":
         # https://github.com/fpco/stackage/issues/3293