diff --git a/site/data/signees/signees.json b/site/data/signees/signees.json
index 55bc0a6..dc70475 100644
--- a/site/data/signees/signees.json
+++ b/site/data/signees/signees.json
@@ -64,6 +64,11 @@
     "img": "osba.png",
     "url": "http://osb-alliance.de"
   },
+  {
+    "name": "Open Source Initiative",
+    "img": "OpenSourceInitiative.png",
+    "url": "https://opensource.org/"
+  },
   {
     "name": "quintessenz - Verein zur Wiederherstellung der Bürgerrechte im Informationszeitalter",
     "img": "quintessenz.png",