diff --git a/app.src b/app.src
index 8202979..6567177 100644
--- a/app.src
+++ b/app.src
@@ -1,3 +1,3 @@
-SOURCE_URL=https://github.com/LimeSurvey/LimeSurvey/archive/a46075a10b6244c850ee11dcf283d38bdd7d8ad5.tar.gz
-SOURCE_SUM=b06778cd6747e4106953810d5aefe9f12d968a3910ce48159bcbb2fe5a61d486
-SOURCE_FILE=limesurvey_2.6.2.1.tar.gz
+SOURCE_URL=https://github.com/LimeSurvey/LimeSurvey/archive/2.64.5+170331.tar.gz
+SOURCE_SUM=ede99fb149feed4a60ea83e540263c912a68fb46c7fca98cb7ff7c5d474f3dc4
+SOURCE_FILE=limesurvey2.64.5+170331.tar.gz