diff --git a/.all-contributorsrc b/.all-contributorsrc
index 9913c1e64..19119645d 100644
--- a/.all-contributorsrc
+++ b/.all-contributorsrc
@@ -291,6 +291,15 @@
         "code"
       ]
     },
+    {
+      "login": "christophercolumbusdog",
+      "name": "Christian Cygnus",
+      "avatar_url": "https://avatars1.githubusercontent.com/u/9342724?v=4",
+      "profile": "http://ccygnus.com/",
+      "contributions": [
+        "code"
+      ]
+    },
     {
       "login": "dzmitryh",
       "name": "Dima Gubin",
diff --git a/README.md b/README.md
index b0a836d2a..c188513e2 100644
--- a/README.md
+++ b/README.md
@@ -202,6 +202,7 @@ This project is licensed under the terms of the MIT license.
   </tr>
   <tr>
     <td align="center"><a href="https://about.me/dzmitryh"><img src="https://avatars2.githubusercontent.com/u/5390492?v=4" width="100px;" alt=""/><br /><sub><b>Dima Gubin</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=dzmitryh" title="Code">💻</a></td>
+    <td align="center"><a href="http://ccygnus.com/"><img src="https://avatars1.githubusercontent.com/u/9342724?v=4" width="100px;" alt=""/><br /><sub><b>Christian Cygnus</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=christophercolumbusdog" title="Code">💻</a></td>
   </tr>
 </table>