diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index 4d23b014b..99f889e6c 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -85,3 +85,4 @@ List of Contributors
 * [Andrew Thia](https://github.com/BlueTea88)
   - Andrew Thia implemented feature interaction constraints
 * [Wei Tian](https://github.com/weitian)
+* [Chen Qin] (https://github.com/chenqin)
diff --git a/rabit b/rabit
index 87143deb4..eb2590b77 160000
--- a/rabit
+++ b/rabit
@@ -1 +1 @@
-Subproject commit 87143deb4c0a34302f727ba35497e3380b2cced8
+Subproject commit eb2590b7742c06a6b99ed319c7ca5629fc1dc058