diff --git a/pkgs/typed-racket-pkgs/typed-racket-lib/info.rkt b/pkgs/typed-racket-pkgs/typed-racket-lib/info.rkt
index eec49160..692d697c 100644
--- a/pkgs/typed-racket-pkgs/typed-racket-lib/info.rkt
+++ b/pkgs/typed-racket-pkgs/typed-racket-lib/info.rkt
@@ -6,6 +6,7 @@
                "pconvert-lib"
                "unstable-contract-lib"
                "unstable-list-lib"
+               "unstable-debug-lib"
                "compatibility-lib" ;; to assign types
                "string-constants-lib"))