diff --git a/.gitignore b/.gitignore
index ca07eec99851748b8c421e68b60ffef0c62cabbe..6ade3adaf51529e0bb160ec38e080975b61ebbee 100644
--- a/.gitignore
+++ b/.gitignore
@@ -27,3 +27,4 @@ sm/libcsm.dylib
 sm/lib/egsl/libegsl.a
 sm/lib/json-c/config.h
 sm/lib/json-c/libjson-c.a
+build