diff --git a/build-constraints.yaml b/build-constraints.yaml
index 88cbf729..9c87a9f4 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -5114,6 +5114,11 @@ packages:
       # https://github.com/commercialhaskell/stackage/issues/5849
       - cryptonite < 0.28
 
+      # https://github.com/commercialhaskell/stackage/issues/5862
+      - ghc-lib-parser    < 9.0.1.20210205
+      - ghc-lib           < 9.0.1.20210205
+      - ghc-lib-parser-ex < 9.0.0.0
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of