diff --git a/.all-contributorsrc b/.all-contributorsrc
index 4342ac5d..0b314087 100644
--- a/.all-contributorsrc
+++ b/.all-contributorsrc
@@ -329,6 +329,16 @@
         "code"
       ]
     }
+  ],
+    {
+      "login": "RrennM",
+      "name": "RrennM",
+      "avatar_url": "https://avatars2.githubusercontent.com/u/27599411?s=400&u=773dbb8a4f877cf06770cbd39e4ddeeafeedcbdd&v=4",
+      "profile": "https://github.com/RrennM",
+      "contributions": [
+        "code"
+      ]
+    }
   ],
   "commitConvention": "none"
 }
diff --git a/day31/JavaScript/bubblesort.js b/day31/JavaScript/bubblesort.js
index e69de29b..eefb5688 100644
--- a/day31/JavaScript/bubblesort.js
+++ b/day31/JavaScript/bubblesort.js
@@ -0,0 +1,18 @@
+/**
+  * @author: RrennM
+  * @date: Oct 28, 2020
+**/
+
+let bubbleSort = (arr) => {
+  for(i = 0; i < arr.length; i++) {
+      for(j = 0; j < arr.length; j++) {
+          if (arr[j] > arr[j+1]) {
+              arr.splice(j+2, 0, arr[j])
+              arr.splice(j, 1)
+          }
+      }
+  }
+  return arr;
+}
+
+bubbleSort([1, 8, 3, 2, 9, 5, 4])
\ No newline at end of file