diff --git a/Makefile b/Makefile
index ebffb374c..a1902904c 100644
--- a/Makefile
+++ b/Makefile
@@ -18,6 +18,7 @@ PDF_JS_FILES = \
 	metrics.js \
 	charsets.js \
 	glyphlist.js \
+	cidmaps.js \
 	$(NULL)
 
 # not sure what to do for all yet