diff --git a/Makefile b/Makefile
index f0f67898..2903c5d9 100644
--- a/Makefile
+++ b/Makefile
@@ -117,6 +117,7 @@ bootstrap: icyc
 	cp srfi/9.c $(BOOTSTRAP_DIR)/srfi
 	cp srfi/9.meta $(BOOTSTRAP_DIR)/srfi
 	cp srfi/18.c $(BOOTSTRAP_DIR)/srfi
+	cp srfi/27.c $(BOOTSTRAP_DIR)/srfi
 	cp cyclone.c $(BOOTSTRAP_DIR)/cyclone.c
 	cp Makefile.config $(BOOTSTRAP_DIR)/Makefile.config