diff --git a/src/cpp/viper/kissfft b/src/cpp/viper/kissfft
new file mode 160000
index 0000000..8f47a67
--- /dev/null
+++ b/src/cpp/viper/kissfft
@@ -0,0 +1 @@
+Subproject commit 8f47a67f595a6641c566087bf5277034be64f24d