diff --git a/Makefile_lapack b/Makefile_lapack
index 1095557..e9e94ee 100644
--- a/Makefile_lapack
+++ b/Makefile_lapack
@@ -1,3 +1,4 @@
+SHELL=/bin/bash
 ifndef LAPACK_VERSION
   LAPACK_VERSION=3.6.0
 endif