diff --git a/common.mk.in b/common.mk.in
index ec3d455..4b2c33b 100644
--- a/common.mk.in
+++ b/common.mk.in
@@ -37,6 +37,8 @@ $(OUTDIR)%.ics: %.xml
 
 $(OUTDIR)%.html: %.html
 	cp -f $< $@
+$(OUTDIR)%.cgi: %.cgi
+	cp -f $< $@
 $(OUTDIR)%.ico: %.ico
 	cp -f $< $@
 $(OUTDIR)%.css: %.css