diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6a001d54f8..5680450eac 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+## 1.6.3 / 2017-05-18
+
+* [BUGFIX] Fix disappearing Alertmanger targets in Alertmanager discovery.
+* [BUGFIX] Fix panic with remote_write on ARMv7.
+* [BUGFIX] Fix stacked graphs to adapt min/max values.
+
 ## 1.6.2 / 2017-05-11
 
 * [BUGFIX] Fix potential memory leak in Kubernetes service discovery
diff --git a/circle.yml b/circle.yml
index 4f9519a0dd..7e09a2cbed 100644
--- a/circle.yml
+++ b/circle.yml
@@ -49,6 +49,7 @@ deployment:
     owner: prometheus
     commands:
       - promu crossbuild tarballs
+      - promu checksum .tarballs
       - promu release .tarballs
       - mkdir $CIRCLE_ARTIFACTS/releases/ && cp -a .tarballs/* $CIRCLE_ARTIFACTS/releases/
       - docker login -e $DOCKER_EMAIL -u $DOCKER_LOGIN -p $DOCKER_PASSWORD
diff --git a/storage/remote/ewma.go b/storage/remote/ewma.go
index d974bc3bb1..82b6dd1014 100644
--- a/storage/remote/ewma.go
+++ b/storage/remote/ewma.go
@@ -29,8 +29,10 @@ type ewmaRate struct {
 	mutex     sync.Mutex
 }
 
-func newEWMARate(alpha float64, interval time.Duration) ewmaRate {
-	return ewmaRate{
+// newEWMARate always allocates a new ewmaRate, as this guarantees the atomically
+// accessed int64 will be aligned on ARM.  See prometheus#2666.
+func newEWMARate(alpha float64, interval time.Duration) *ewmaRate {
+	return &ewmaRate{
 		alpha:    alpha,
 		interval: interval,
 	}
diff --git a/storage/remote/queue_manager.go b/storage/remote/queue_manager.go
index ad462d1767..6813566a4a 100644
--- a/storage/remote/queue_manager.go
+++ b/storage/remote/queue_manager.go
@@ -185,7 +185,7 @@ type QueueManager struct {
 	quit        chan struct{}
 	wg          sync.WaitGroup
 
-	samplesIn, samplesOut, samplesOutDuration ewmaRate
+	samplesIn, samplesOut, samplesOutDuration *ewmaRate
 	integralAccumulator                       float64
 }