diff --git a/build-constraints.yaml b/build-constraints.yaml
index 9cc3708b..85a7e465 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -682,6 +682,9 @@ packages:
         - ghc-lib
         - ghc-lib-parser
 
+    "Shayne Fletcher <shayne.fletcher@digitalasset.com>":
+        - ghc-lib-parser-ex
+
     "Karl Ostmo <kostmo@gmail.com> @kostmo":
         - perfect-hash-generator