diff --git a/_data/signed/sobolev.yaml b/_data/signed/sobolev.yaml
new file mode 100644
index 00000000..93c524c2
--- /dev/null
+++ b/_data/signed/sobolev.yaml
@@ -0,0 +1,2 @@
+name: Eugene Sobolev
+link: https://github.com/sobolevbel