diff --git a/build-constraints.yaml b/build-constraints.yaml
index 780fe0d8..a9285a16 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -788,10 +788,10 @@ packages:
 
     "Digital Asset <shayne.fletcher@digitalasset.com>":
         - ghc-lib
-        - ghc-lib-parser
+        - ghc-lib-parser < 9.0.1  # TODO(mihaimaruseac): Fix when switching to GHC 9.0.1
 
     "Shayne Fletcher <shayne.fletcher@digitalasset.com>":
-        - ghc-lib-parser-ex
+        - ghc-lib-parser-ex < 9 # TODO(mihaimaruseac): Fix when switching to GHC 9.0.1
 
     "Karl Ostmo <kostmo@gmail.com> @kostmo":
         - perfect-hash-generator