diff --git a/_data/simple-icons.json b/_data/simple-icons.json
index a4cd64d8..5fd64d90 100644
--- a/_data/simple-icons.json
+++ b/_data/simple-icons.json
@@ -1733,7 +1733,7 @@
         {
             "title": "Ubuntu",
             "hex": "E95420",
-            "source": "https://insights.ubuntu.com/press-centre"
+            "source": "https://design.ubuntu.com/brand/ubuntu-logo/"
         },
         {
             "title": "Udacity",
@@ -1887,8 +1887,8 @@
         },
         {
             "title": "Xing",
-            "hex": "005A5F",
-            "source": "https://worldvectorlogo.com/logo/xing-icon"
+            "hex": "006567",
+            "source": "https://dev.xing.com/logo_rules"
         },
         {
             "title": "Y Combinator",
@@ -1928,7 +1928,7 @@
         {
             "title": "Zendesk",
             "hex": "03363D",
-            "source": "https://www.zendesk.com"
+            "source": "https://www.zendesk.com/company/brand-assets/#logo"
         },
         {
             "title": "Zerply",