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-rw-r--r--wrappers/wrapper.rkt2
1 files changed, 2 insertions, 0 deletions
diff --git a/wrappers/wrapper.rkt b/wrappers/wrapper.rkt
index 91714ae..d9b34e8 100644
--- a/wrappers/wrapper.rkt
+++ b/wrappers/wrapper.rkt
@@ -1,5 +1,7 @@
#lang racket/base
+;; requires racket >= 5.3 because of submodules
+
;; Lowlevel interface
(module low-level racket/base