diff --git a/gtsam/3rdparty/CMakeLists.txt b/gtsam/3rdparty/CMakeLists.txt
index 3fb5cf185..cd41d7eda 100644
--- a/gtsam/3rdparty/CMakeLists.txt
+++ b/gtsam/3rdparty/CMakeLists.txt
@@ -24,3 +24,5 @@ if(NOT GTSAM_USE_SYSTEM_EIGEN)
 		DESTINATION include/gtsam/3rdparty/Eigen
 		FILES_MATCHING PATTERN "*.h")
 endif()
+
+add_subdirectory(metis-5.1.0)