diff --git a/dmlc-core b/dmlc-core
index 969fb6455..1db0792e1 160000
--- a/dmlc-core
+++ b/dmlc-core
@@ -1 +1 @@
-Subproject commit 969fb6455ae41d5d2f7c4ba8921f4885e9aa63c8
+Subproject commit 1db0792e1a55355b1f07699bba18c88ded996953
diff --git a/jvm-packages/create_jni.sh b/jvm-packages/create_jni.sh
index e8ec297e4..81d0d0992 100755
--- a/jvm-packages/create_jni.sh
+++ b/jvm-packages/create_jni.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env sh
+#!/usr/bin/env bash
 echo "build java wrapper"
 
 # cd to script's directory