diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..62eea9b
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "kissfft"]
+	path = kissfft
+	url = https://github.com/mborgerding/kissfft.git
diff --git a/kissfft b/kissfft
new file mode 160000
index 0000000..7bce415
--- /dev/null
+++ b/kissfft
@@ -0,0 +1 @@
+Subproject commit 7bce4153c6bc8aba2db0e889e576f9d00505cbe1