diff --git a/_data/signed/slk500.yaml b/_data/signed/slk500.yaml
new file mode 100644
index 000000000..7b82175f3
--- /dev/null
+++ b/_data/signed/slk500.yaml
@@ -0,0 +1,2 @@
+name: Sławomir Grochowski
+link: https://slawomirgrochowski.pl