diff --git a/.all-contributorsrc b/.all-contributorsrc
index 0d559687..0e245de7 100644
--- a/.all-contributorsrc
+++ b/.all-contributorsrc
@@ -204,6 +204,15 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "msiemens",
+      "name": "Markus Siemens",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1873922?v=4",
+      "profile": "https://m-siemens.de/",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 7,