1 files changed, 1 insertions, 0 deletions

diff --git a/mkfile b/mkfile
index 017cc1a..0c05261 100644
--- a/mkfile
+++ b/mkfile
@@ -15,6 +15,7 @@ OFILES=\
 	error.$O\
 	hybrids.$O\
 	inverse.$O\
+	concurrency.$O\
 
 HFILES=\
 	apl9.h\