diff --git a/Jenkinsfile b/Jenkinsfile
index a408b8c..5484df3 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -27,7 +27,7 @@ pipeline {
 						stage ('Initialize libraries') {
 							steps {
 								sh 'apt-get update'
-								sh 'git submodule update --init --remote --recursive'
+								sh 'git reset --hard origin/master; git submodule update --init --remote --recursive'
 								sh 'git submodule update --merge'
 								sh './attach_modules.sh'
 								sh 'cd libraries; ./build.sh'
@@ -69,7 +69,7 @@ pipeline {
 						stage ('Initialize libraries') {
 							steps {
 								sh 'apt-get update'
-								sh 'git submodule update --init --remote --recursive'
+								sh 'git reset --hard origin/master; git submodule update --init --remote --recursive'
 								sh 'git submodule update --merge'
 								sh './attach_modules.sh'
 								sh 'cd libraries; ./build.sh'