diff --git a/pkgs/rackunit-pkgs/rackunit-doc/info.rkt b/pkgs/rackunit-pkgs/rackunit-doc/info.rkt
index ee6ddfb..9e88e47 100644
--- a/pkgs/rackunit-pkgs/rackunit-doc/info.rkt
+++ b/pkgs/rackunit-pkgs/rackunit-doc/info.rkt
@@ -7,7 +7,8 @@
 (define pkg-desc "RackUnit documentation")
 
 (define pkg-authors '(noel ryanc))
-(define build-deps '("racket-doc"
+(define build-deps '("racket-index"
+                     "racket-doc"
                      "rackunit-gui"
                      "rackunit-lib"
                      "scribble-lib"))