diff --git a/build-constraints.yaml b/build-constraints.yaml
index d9c0d7b6..22cfb7b8 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -5512,7 +5512,7 @@ packages:
 
     "GHC upper bounds":
         # Need to always match the version shipped with GHC
-        - Win32 == 2.13.3.0
+        - Win32 == 2.12.0.1
 
     # Section for packages that have been mass-disabled due to
     # compilation failures, e.g. after we upgrade GHC. Every package