diff --git a/_data/signed/DoubleDensity.yaml b/_data/signed/DoubleDensity.yaml
new file mode 100644
index 000000000..bc42042bf
--- /dev/null
+++ b/_data/signed/DoubleDensity.yaml
@@ -0,0 +1,2 @@
+name: DoubleDensity
+link: https://github.com/DoubleDensity