diff --git a/vendor/github.com/prometheus/tsdb/compact.go b/vendor/github.com/prometheus/tsdb/compact.go
index f96e64394..b82d9a04c 100644
--- a/vendor/github.com/prometheus/tsdb/compact.go
+++ b/vendor/github.com/prometheus/tsdb/compact.go
@@ -428,10 +428,10 @@ func (c *LeveledCompactor) write(dest string, meta *BlockMeta, blocks ...BlockRe
 	}
 
 	indexw, err := index.NewWriter(filepath.Join(tmp, indexFilename))
-	meta.Version = indexw.Version
 	if err != nil {
 		return errors.Wrap(err, "open index writer")
 	}
+	meta.Version = indexw.Version
 
 	if err := c.populateBlock(blocks, meta, indexw, chunkw); err != nil {
 		return errors.Wrap(err, "write compaction")
diff --git a/vendor/vendor.json b/vendor/vendor.json
index aa5d16654..ca6190896 100644
--- a/vendor/vendor.json
+++ b/vendor/vendor.json
@@ -800,10 +800,10 @@
 			"revisionTime": "2016-04-11T19:08:41Z"
 		},
 		{
-			"checksumSHA1": "XHNJVYnIBaFpQOOA4wTqjDbMkUo=",
+			"checksumSHA1": "errrSfk16j274D3QY61bWODd56c=",
 			"path": "github.com/prometheus/tsdb",
-			"revision": "467948f3c3f2f6f4ed9881afba27dd3ae24393eb",
-			"revisionTime": "2018-01-18T08:32:54Z"
+			"revision": "ad0fdaf436fc99828bce60f81984dcfa3a282a44",
+			"revisionTime": "2018-01-24T14:58:35Z"
 		},
 		{
 			"checksumSHA1": "XTirmk6Pq5TBGIZEaN5VL4k3i1s=",