diff --git a/build-constraints.yaml b/build-constraints.yaml
index 01fd9518..a918027e 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4676,6 +4676,10 @@ packages:
         # https://github.com/commercialhaskell/stackage/issues/4604
         - inline-c < 0.8
 
+        # https://github.com/commercialhaskell/stackage/issues/4605
+        - ghc-lib < 0.20190603
+        - ghc-lib-parser < 0.20190603
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of