diff --git a/vendor/github.com/prometheus/tsdb/compact.go b/vendor/github.com/prometheus/tsdb/compact.go
index 3668f0831..0c42bda62 100644
--- a/vendor/github.com/prometheus/tsdb/compact.go
+++ b/vendor/github.com/prometheus/tsdb/compact.go
@@ -151,16 +151,11 @@ func (c *LeveledCompactor) Plan(dir string) ([]string, error) {
 	if err != nil {
 		return nil, err
 	}
-	// We do not include the most recently created block. This gives users a window
-	// of a full block size to piece-wise backup new data without having to care
-	// about data overlap.
 	if len(dirs) < 1 {
 		return nil, nil
 	}
-	dirs = dirs[:len(dirs)-1]
 
 	var dms []dirMeta
-
 	for _, dir := range dirs {
 		meta, err := readMetaFile(dir)
 		if err != nil {
@@ -176,6 +171,10 @@ func (c *LeveledCompactor) plan(dms []dirMeta) ([]string, error) {
 		return dms[i].meta.MinTime < dms[j].meta.MinTime
 	})
 
+	// We do not include a recently created block with max(minTime), so the block which was just created from WAL.
+	// This gives users a window of a full block size to piece-wise backup new data without having to care about data overlap.
+	dms = dms[:len(dms)-1]
+
 	var res []string
 	for _, dm := range c.selectDirs(dms) {
 		res = append(res, dm.dir)
diff --git a/vendor/github.com/prometheus/tsdb/index/index.go b/vendor/github.com/prometheus/tsdb/index/index.go
index 2689b5691..3cad716c0 100644
--- a/vendor/github.com/prometheus/tsdb/index/index.go
+++ b/vendor/github.com/prometheus/tsdb/index/index.go
@@ -653,6 +653,11 @@ func newReader(b ByteSlice, c io.Closer) (*Reader, error) {
 	return r, nil
 }
 
+// Version returns the file format version of the underlying index.
+func (r *Reader) Version() int {
+	return r.version
+}
+
 // Range marks a byte range.
 type Range struct {
 	Start, End int64
diff --git a/vendor/vendor.json b/vendor/vendor.json
index 14fa760dc..d756ff6a9 100644
--- a/vendor/vendor.json
+++ b/vendor/vendor.json
@@ -800,40 +800,40 @@
 			"revisionTime": "2016-04-11T19:08:41Z"
 		},
 		{
-			"checksumSHA1": "zVgXlbZ1J8GhBN7tZji7M/SuiAU=",
+			"checksumSHA1": "JfxP001vgt0P+hEDk/if0bxa8xU=",
 			"path": "github.com/prometheus/tsdb",
-			"revision": "16b2bf1b45ce3e3536c78ebec5116ea09a69786e",
-			"revisionTime": "2018-03-02T11:51:49Z"
+			"revision": "00404ae5ab578bb550377a17aab5511deb0592c5",
+			"revisionTime": "2018-03-13T20:20:03Z"
 		},
 		{
 			"checksumSHA1": "S7F4yWxVLhxQNHMdgoOo6plmOOs=",
 			"path": "github.com/prometheus/tsdb/chunkenc",
-			"revision": "494acd307058387ced7646f9996b0f7372eaa558",
-			"revisionTime": "2018-02-15T11:29:47Z"
+			"revision": "00404ae5ab578bb550377a17aab5511deb0592c5",
+			"revisionTime": "2018-03-13T20:20:03Z"
 		},
 		{
 			"checksumSHA1": "+zsn1i8cqwgZXL8Bg6jDy32xjAo=",
 			"path": "github.com/prometheus/tsdb/chunks",
-			"revision": "494acd307058387ced7646f9996b0f7372eaa558",
-			"revisionTime": "2018-02-15T11:29:47Z"
+			"revision": "00404ae5ab578bb550377a17aab5511deb0592c5",
+			"revisionTime": "2018-03-13T20:20:03Z"
 		},
 		{
 			"checksumSHA1": "h49AAcJ5+iRBwCgbfQf+2T1E1ZE=",
 			"path": "github.com/prometheus/tsdb/fileutil",
-			"revision": "494acd307058387ced7646f9996b0f7372eaa558",
-			"revisionTime": "2018-02-15T11:29:47Z"
+			"revision": "00404ae5ab578bb550377a17aab5511deb0592c5",
+			"revisionTime": "2018-03-13T20:20:03Z"
 		},
 		{
-			"checksumSHA1": "UlvN+ZhTu52S8f9niySQpPC+dvQ=",
+			"checksumSHA1": "4ebzIE2Jvj6+SG6yGFSXN8scgfo=",
 			"path": "github.com/prometheus/tsdb/index",
-			"revision": "494acd307058387ced7646f9996b0f7372eaa558",
-			"revisionTime": "2018-02-15T11:29:47Z"
+			"revision": "00404ae5ab578bb550377a17aab5511deb0592c5",
+			"revisionTime": "2018-03-13T20:20:03Z"
 		},
 		{
 			"checksumSHA1": "Va8HWvOFTwFeewZFadMAOzNGDps=",
 			"path": "github.com/prometheus/tsdb/labels",
-			"revision": "494acd307058387ced7646f9996b0f7372eaa558",
-			"revisionTime": "2018-02-15T11:29:47Z"
+			"revision": "00404ae5ab578bb550377a17aab5511deb0592c5",
+			"revisionTime": "2018-03-13T20:20:03Z"
 		},
 		{
 			"checksumSHA1": "5SYLEhADhdBVZAGPVHWggQl7H8k=",