diff --git a/_data/signed/sin2x.yaml b/_data/signed/sin2x.yaml
new file mode 100644
index 000000000..eb8a118b1
--- /dev/null
+++ b/_data/signed/sin2x.yaml
@@ -0,0 +1,2 @@
+name: Sin2x
+link: mailto:sinlich@gmail.com