diff --git a/default.xml b/default.xml
index 4e5a39e..1ecd2da 100644
--- a/default.xml
+++ b/default.xml
@@ -2,7 +2,7 @@
 <manifest>
 
   <remote name="aosp" fetch=".." review="https://android-review.googlesource.com/"/>
-  <default revision="lollipop-mr1-cts-release" remote="aosp" sync-j="4"/>
+  <default revision="refs/tags/android-cts-5.1_r17" remote="aosp" sync-j="4"/>
 
   <project path="build" name="platform/build" groups="pdk,tradefed">
     <copyfile src="core/root.mk" dest="Makefile"/>
@@ -508,4 +508,4 @@
   <project path="tools/swt" name="platform/tools/swt" groups="notdefault,tools"/>
   <project path="tools/tradefederation" name="platform/tools/tradefederation" groups="notdefault,tradefed"/>
 
-</manifest>
\ No newline at end of file
+</manifest>