diff --git a/go.mod b/go.mod
index 32a63137..aeea730d 100644
--- a/go.mod
+++ b/go.mod
@@ -33,7 +33,7 @@ require (
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/stretchr/testify v1.8.4 // indirect
-	github.com/ulikunitz/xz v0.5.4 // indirect
+	github.com/ulikunitz/xz v0.5.8 // indirect
 	golang.org/x/crypto v0.14.0 // indirect
 	golang.org/x/net v0.17.0 // indirect
 	golang.org/x/sys v0.13.0 // indirect
diff --git a/go.sum b/go.sum
index 70f484ee..941aeb0a 100644
--- a/go.sum
+++ b/go.sum
@@ -264,8 +264,8 @@ github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcU
 github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 github.com/tmc/grpc-websocket-proxy v0.0.0-20170815181823-89b8d40f7ca8/go.mod h1:ncp9v5uamzpCO7NfCPTXjqaC+bZgJeR0sMTm6dMHP7U=
 github.com/ugorji/go/codec v0.0.0-20181204163529-d75b2dcb6bc8/go.mod h1:VFNgLljTbGfSG7qAOspJ7OScBnGdDN/yBr0sguwnwf0=
-github.com/ulikunitz/xz v0.5.4 h1:zATC2OoZ8H1TZll3FpbX+ikwmadbO699PE06cIkm9oU=
-github.com/ulikunitz/xz v0.5.4/go.mod h1:2bypXElzHzzJZwzH67Y6wb67pO62Rzfn7BSiF4ABRW8=
+github.com/ulikunitz/xz v0.5.8 h1:ERv8V6GKqVi23rgu5cj9pVfVzJbOqAY2Ntl88O6c2nQ=
+github.com/ulikunitz/xz v0.5.8/go.mod h1:nbz6k7qbPmH4IRqmfOplQw/tblSgqTqBwxkY0oWt/14=
 github.com/xiang90/probing v0.0.0-20160813154853-07dd2e8dfe18/go.mod h1:UETIi67q53MR2AWcXfiuqkDkRtnGDLqkBTpCHuJHxtU=
 github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q=
 go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
diff --git a/vendor/github.com/ulikunitz/xz/LICENSE b/vendor/github.com/ulikunitz/xz/LICENSE
index 58ebdc16..d3214997 100644
--- a/vendor/github.com/ulikunitz/xz/LICENSE
+++ b/vendor/github.com/ulikunitz/xz/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2014-2016  Ulrich Kunitz
+Copyright (c) 2014-2020  Ulrich Kunitz
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/vendor/github.com/ulikunitz/xz/README.md b/vendor/github.com/ulikunitz/xz/README.md
index 969ae7a0..0a2dc828 100644
--- a/vendor/github.com/ulikunitz/xz/README.md
+++ b/vendor/github.com/ulikunitz/xz/README.md
@@ -12,46 +12,48 @@ have been developed over a long time and are highly optimized. However
 there are a number of improvements planned and I'm very optimistic about
 parallel compression and decompression. Stay tuned!
 
-# Using the API
+## Using the API
 
 The following example program shows how to use the API.
 
-    package main
-
-    import (
-        "bytes"
-        "io"
-        "log"
-        "os"
-
-        "github.com/ulikunitz/xz"
-    )
-
-    func main() {
-        const text = "The quick brown fox jumps over the lazy dog.\n"
-        var buf bytes.Buffer
-        // compress text
-        w, err := xz.NewWriter(&buf)
-        if err != nil {
-            log.Fatalf("xz.NewWriter error %s", err)
-        }
-        if _, err := io.WriteString(w, text); err != nil {
-            log.Fatalf("WriteString error %s", err)
-        }
-        if err := w.Close(); err != nil {
-            log.Fatalf("w.Close error %s", err)
-        }
-        // decompress buffer and write output to stdout
-        r, err := xz.NewReader(&buf)
-        if err != nil {
-            log.Fatalf("NewReader error %s", err)
-        }
-        if _, err = io.Copy(os.Stdout, r); err != nil {
-            log.Fatalf("io.Copy error %s", err)
-        }
+```go
+package main
+
+import (
+    "bytes"
+    "io"
+    "log"
+    "os"
+
+    "github.com/ulikunitz/xz"
+)
+
+func main() {
+    const text = "The quick brown fox jumps over the lazy dog.\n"
+    var buf bytes.Buffer
+    // compress text
+    w, err := xz.NewWriter(&buf)
+    if err != nil {
+        log.Fatalf("xz.NewWriter error %s", err)
     }
+    if _, err := io.WriteString(w, text); err != nil {
+        log.Fatalf("WriteString error %s", err)
+    }
+    if err := w.Close(); err != nil {
+        log.Fatalf("w.Close error %s", err)
+    }
+    // decompress buffer and write output to stdout
+    r, err := xz.NewReader(&buf)
+    if err != nil {
+        log.Fatalf("NewReader error %s", err)
+    }
+    if _, err = io.Copy(os.Stdout, r); err != nil {
+        log.Fatalf("io.Copy error %s", err)
+    }
+}
+```
 
-# Using the gxz compression tool
+## Using the gxz compression tool
 
 The package includes a gxz command line utility for compression and
 decompression.
diff --git a/vendor/github.com/ulikunitz/xz/TODO.md b/vendor/github.com/ulikunitz/xz/TODO.md
index 7b34c0ca..84bd5dcb 100644
--- a/vendor/github.com/ulikunitz/xz/TODO.md
+++ b/vendor/github.com/ulikunitz/xz/TODO.md
@@ -1,5 +1,9 @@
 # TODO list
 
+## Release v0.5.x
+
+1. Support check flag in gxz command.
+
 ## Release v0.6
 
 1. Review encoder and check for lzma improvements under xz.
@@ -86,6 +90,24 @@
 
 ## Log
 
+## 2020-08-19
+
+Release v0.5.8 fixes issue
+[issue #35](https://github.com/ulikunitz/xz/issues/35).
+
+### 2020-02-24
+
+Release v0.5.7 supports the check-ID None and fixes
+[issue #27](https://github.com/ulikunitz/xz/issues/27).
+
+### 2019-02-20
+
+Release v0.5.6 supports the go.mod file.
+
+### 2018-10-28
+
+Release v0.5.5 fixes issues #19 observing ErrLimit outputs.
+
 ### 2017-06-05
 
 Release v0.5.4 fixes issues #15 of another problem with the padding size
@@ -102,7 +124,7 @@ Release v0.5.2 became necessary to allow the decoding of xz files with
 4-byte padding in the block header. Many thanks to Greg, who reported
 the issue.
 
-### 2016-07-23 
+### 2016-07-23
 
 Release v0.5.1 became necessary to fix problems with 32-bit platforms.
 Many thanks to Bruno Brigas, who reported the issue.
@@ -194,7 +216,7 @@ and lzma.Writer and fixed the error handling.
 By computing the bit length of the LZMA operations I was able to
 improve the greedy algorithm implementation. By using an 8 MByte buffer
 the compression rate was not as good as for xz but already better then
-gzip default. 
+gzip default.
 
 Compression is currently slow, but this is something we will be able to
 improve over time.
@@ -213,7 +235,7 @@ The package lzb contains now the basic implementation for creating or
 reading LZMA byte streams. It allows the support for the implementation
 of the DAG-shortest-path algorithm for the compression function.
 
-### 2015-04-23 
+### 2015-04-23
 
 Completed yesterday the lzbase classes. I'm a little bit concerned that
 using the components may require too much code, but on the other hand
@@ -242,7 +264,7 @@ right lzbase.Reader and lzbase.Writer.
 
 As a start I have implemented ReaderState and WriterState to ensure
 that the state for reading is only used by readers and WriterState only
-used by Writers. 
+used by Writers.
 
 ### 2015-04-20
 
@@ -274,7 +296,7 @@ almost all files from lzma.
 
 ### 2015-03-31
 
-Removed only a TODO item. 
+Removed only a TODO item.
 
 However in Francesco Campoy's presentation "Go for Javaneros
 (Javaïstes?)" is the the idea that using an embedded field E, all the
diff --git a/vendor/github.com/ulikunitz/xz/bits.go b/vendor/github.com/ulikunitz/xz/bits.go
index fadc1a59..dc8f3286 100644
--- a/vendor/github.com/ulikunitz/xz/bits.go
+++ b/vendor/github.com/ulikunitz/xz/bits.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
@@ -54,6 +54,8 @@ var errOverflowU64 = errors.New("xz: uvarint overflows 64-bit unsigned integer")
 
 // readUvarint reads a uvarint from the given byte reader.
 func readUvarint(r io.ByteReader) (x uint64, n int, err error) {
+	const maxUvarintLen = 10
+
 	var s uint
 	i := 0
 	for {
@@ -62,8 +64,11 @@ func readUvarint(r io.ByteReader) (x uint64, n int, err error) {
 			return x, i, err
 		}
 		i++
+		if i > maxUvarintLen {
+			return x, i, errOverflowU64
+		}
 		if b < 0x80 {
-			if i > 10 || i == 10 && b > 1 {
+			if i == maxUvarintLen && b > 1 {
 				return x, i, errOverflowU64
 			}
 			return x | uint64(b)<<s, i, nil
diff --git a/vendor/github.com/ulikunitz/xz/crc.go b/vendor/github.com/ulikunitz/xz/crc.go
index b44dca96..638774ad 100644
--- a/vendor/github.com/ulikunitz/xz/crc.go
+++ b/vendor/github.com/ulikunitz/xz/crc.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/format.go b/vendor/github.com/ulikunitz/xz/format.go
index 798159c6..edfec9a9 100644
--- a/vendor/github.com/ulikunitz/xz/format.go
+++ b/vendor/github.com/ulikunitz/xz/format.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
@@ -46,7 +46,8 @@ const HeaderLen = 12
 
 // Constants for the checksum methods supported by xz.
 const (
-	CRC32  byte = 0x1
+	None   byte = 0x0
+	CRC32       = 0x1
 	CRC64       = 0x4
 	SHA256      = 0xa
 )
@@ -58,7 +59,7 @@ var errInvalidFlags = errors.New("xz: invalid flags")
 // invalid.
 func verifyFlags(flags byte) error {
 	switch flags {
-	case CRC32, CRC64, SHA256:
+	case None, CRC32, CRC64, SHA256:
 		return nil
 	default:
 		return errInvalidFlags
@@ -67,6 +68,7 @@ func verifyFlags(flags byte) error {
 
 // flagstrings maps flag values to strings.
 var flagstrings = map[byte]string{
+	None:   "None",
 	CRC32:  "CRC-32",
 	CRC64:  "CRC-64",
 	SHA256: "SHA-256",
@@ -85,6 +87,8 @@ func flagString(flags byte) string {
 // hash method encoded in flags.
 func newHashFunc(flags byte) (newHash func() hash.Hash, err error) {
 	switch flags {
+	case None:
+		newHash = newNoneHash
 	case CRC32:
 		newHash = newCRC32
 	case CRC64:
diff --git a/vendor/github.com/ulikunitz/xz/fox-check-none.xz b/vendor/github.com/ulikunitz/xz/fox-check-none.xz
new file mode 100644
index 00000000..46043f7d
Binary files /dev/null and b/vendor/github.com/ulikunitz/xz/fox-check-none.xz differ
diff --git a/vendor/github.com/ulikunitz/xz/internal/hash/cyclic_poly.go b/vendor/github.com/ulikunitz/xz/internal/hash/cyclic_poly.go
index a3288787..f2861ba3 100644
--- a/vendor/github.com/ulikunitz/xz/internal/hash/cyclic_poly.go
+++ b/vendor/github.com/ulikunitz/xz/internal/hash/cyclic_poly.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/internal/hash/doc.go b/vendor/github.com/ulikunitz/xz/internal/hash/doc.go
index f99ec220..e28d23be 100644
--- a/vendor/github.com/ulikunitz/xz/internal/hash/doc.go
+++ b/vendor/github.com/ulikunitz/xz/internal/hash/doc.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/internal/hash/rabin_karp.go b/vendor/github.com/ulikunitz/xz/internal/hash/rabin_karp.go
index 58635b11..b8e66d97 100644
--- a/vendor/github.com/ulikunitz/xz/internal/hash/rabin_karp.go
+++ b/vendor/github.com/ulikunitz/xz/internal/hash/rabin_karp.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/internal/hash/roller.go b/vendor/github.com/ulikunitz/xz/internal/hash/roller.go
index ab6a19ca..34c81b38 100644
--- a/vendor/github.com/ulikunitz/xz/internal/hash/roller.go
+++ b/vendor/github.com/ulikunitz/xz/internal/hash/roller.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/internal/xlog/xlog.go b/vendor/github.com/ulikunitz/xz/internal/xlog/xlog.go
index 0ba45e8f..678b5a05 100644
--- a/vendor/github.com/ulikunitz/xz/internal/xlog/xlog.go
+++ b/vendor/github.com/ulikunitz/xz/internal/xlog/xlog.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/bintree.go b/vendor/github.com/ulikunitz/xz/lzma/bintree.go
index a781bd19..58d6a92a 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/bintree.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/bintree.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/bitops.go b/vendor/github.com/ulikunitz/xz/lzma/bitops.go
index e9bab019..2784ec6b 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/bitops.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/bitops.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/breader.go b/vendor/github.com/ulikunitz/xz/lzma/breader.go
index 5350d814..4ad09a14 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/breader.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/breader.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/buffer.go b/vendor/github.com/ulikunitz/xz/lzma/buffer.go
index 50e0b6d5..9cb7838a 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/buffer.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/buffer.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/bytewriter.go b/vendor/github.com/ulikunitz/xz/lzma/bytewriter.go
index a3696ba0..290606dd 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/bytewriter.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/bytewriter.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/decoder.go b/vendor/github.com/ulikunitz/xz/lzma/decoder.go
index 16e14db3..e5a760a5 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/decoder.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/decoder.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/decoderdict.go b/vendor/github.com/ulikunitz/xz/lzma/decoderdict.go
index 564a12b8..ba06712b 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/decoderdict.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/decoderdict.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/directcodec.go b/vendor/github.com/ulikunitz/xz/lzma/directcodec.go
index e08eb989..e6e0c6dd 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/directcodec.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/directcodec.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/distcodec.go b/vendor/github.com/ulikunitz/xz/lzma/distcodec.go
index b053a2dc..69871c04 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/distcodec.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/distcodec.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/encoder.go b/vendor/github.com/ulikunitz/xz/lzma/encoder.go
index 18ce0099..59055eb6 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/encoder.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/encoder.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
@@ -11,7 +11,7 @@ import (
 
 // opLenMargin provides the upper limit of the number of bytes required
 // to encode a single operation.
-const opLenMargin = 10
+const opLenMargin = 16
 
 // compressFlags control the compression process.
 type compressFlags uint32
diff --git a/vendor/github.com/ulikunitz/xz/lzma/encoderdict.go b/vendor/github.com/ulikunitz/xz/lzma/encoderdict.go
index 9d0fbc70..40f3d3f6 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/encoderdict.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/encoderdict.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/hashtable.go b/vendor/github.com/ulikunitz/xz/lzma/hashtable.go
index d786a974..e82970ea 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/hashtable.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/hashtable.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/header.go b/vendor/github.com/ulikunitz/xz/lzma/header.go
index bc708969..cda39462 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/header.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/header.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/header2.go b/vendor/github.com/ulikunitz/xz/lzma/header2.go
index ac6a71a5..cd148812 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/header2.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/header2.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/lengthcodec.go b/vendor/github.com/ulikunitz/xz/lzma/lengthcodec.go
index e5177309..927395bd 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/lengthcodec.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/lengthcodec.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/literalcodec.go b/vendor/github.com/ulikunitz/xz/lzma/literalcodec.go
index c949d6eb..ca31530f 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/literalcodec.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/literalcodec.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/matchalgorithm.go b/vendor/github.com/ulikunitz/xz/lzma/matchalgorithm.go
index 4a244eb1..7d03ec0d 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/matchalgorithm.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/matchalgorithm.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/operation.go b/vendor/github.com/ulikunitz/xz/lzma/operation.go
index 733bb99d..a75c9b46 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/operation.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/operation.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/prob.go b/vendor/github.com/ulikunitz/xz/lzma/prob.go
index 24d50ec6..6987a166 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/prob.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/prob.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/properties.go b/vendor/github.com/ulikunitz/xz/lzma/properties.go
index 23418e25..662feba8 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/properties.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/properties.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/rangecodec.go b/vendor/github.com/ulikunitz/xz/lzma/rangecodec.go
index 6361c5e7..7189a037 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/rangecodec.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/rangecodec.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/reader.go b/vendor/github.com/ulikunitz/xz/lzma/reader.go
index 2ef3dcaa..7b7eef31 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/reader.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/reader.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/reader2.go b/vendor/github.com/ulikunitz/xz/lzma/reader2.go
index a55cfaa4..33074e62 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/reader2.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/reader2.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/state.go b/vendor/github.com/ulikunitz/xz/lzma/state.go
index 50235105..03f061cf 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/state.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/state.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/treecodecs.go b/vendor/github.com/ulikunitz/xz/lzma/treecodecs.go
index 504b3d78..1cb3596f 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/treecodecs.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/treecodecs.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/writer.go b/vendor/github.com/ulikunitz/xz/lzma/writer.go
index efe34fb6..5803ecca 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/writer.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/writer.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/writer2.go b/vendor/github.com/ulikunitz/xz/lzma/writer2.go
index 7c1afe15..c263b066 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/writer2.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/writer2.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzmafilter.go b/vendor/github.com/ulikunitz/xz/lzmafilter.go
index 69cf5f7c..6f4aa2c0 100644
--- a/vendor/github.com/ulikunitz/xz/lzmafilter.go
+++ b/vendor/github.com/ulikunitz/xz/lzmafilter.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/none-check.go b/vendor/github.com/ulikunitz/xz/none-check.go
new file mode 100644
index 00000000..e12d8e47
--- /dev/null
+++ b/vendor/github.com/ulikunitz/xz/none-check.go
@@ -0,0 +1,23 @@
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package xz
+
+import "hash"
+
+type noneHash struct{}
+
+func (h noneHash) Write(p []byte) (n int, err error) { return len(p), nil }
+
+func (h noneHash) Sum(b []byte) []byte { return b }
+
+func (h noneHash) Reset() {}
+
+func (h noneHash) Size() int { return 0 }
+
+func (h noneHash) BlockSize() int { return 0 }
+
+func newNoneHash() hash.Hash {
+	return &noneHash{}
+}
diff --git a/vendor/github.com/ulikunitz/xz/reader.go b/vendor/github.com/ulikunitz/xz/reader.go
index 0634c6bc..22cd6d50 100644
--- a/vendor/github.com/ulikunitz/xz/reader.go
+++ b/vendor/github.com/ulikunitz/xz/reader.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
@@ -283,7 +283,11 @@ func (c *ReaderConfig) newBlockReader(xz io.Reader, h *blockHeader,
 	if err != nil {
 		return nil, err
 	}
-	br.r = io.TeeReader(fr, br.hash)
+	if br.hash.Size() != 0 {
+		br.r = io.TeeReader(fr, br.hash)
+	} else {
+		br.r = fr
+	}
 
 	return br, nil
 }
diff --git a/vendor/github.com/ulikunitz/xz/writer.go b/vendor/github.com/ulikunitz/xz/writer.go
index c126f709..aec10dfa 100644
--- a/vendor/github.com/ulikunitz/xz/writer.go
+++ b/vendor/github.com/ulikunitz/xz/writer.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
@@ -18,8 +18,10 @@ type WriterConfig struct {
 	DictCap    int
 	BufSize    int
 	BlockSize  int64
-	// checksum method: CRC32, CRC64 or SHA256
+	// checksum method: CRC32, CRC64 or SHA256 (default: CRC64)
 	CheckSum byte
+	// Forces NoChecksum (default: false)
+	NoCheckSum bool
 	// match algorithm
 	Matcher lzma.MatchAlgorithm
 }
@@ -41,6 +43,9 @@ func (c *WriterConfig) fill() {
 	if c.CheckSum == 0 {
 		c.CheckSum = CRC64
 	}
+	if c.NoCheckSum {
+		c.CheckSum = None
+	}
 }
 
 // Verify checks the configuration for errors. Zero values will be
@@ -284,7 +289,11 @@ func (c *WriterConfig) newBlockWriter(xz io.Writer, hash hash.Hash) (bw *blockWr
 	if err != nil {
 		return nil, err
 	}
-	bw.mw = io.MultiWriter(bw.w, bw.hash)
+	if bw.hash.Size() != 0 {
+		bw.mw = io.MultiWriter(bw.w, bw.hash)
+	} else {
+		bw.mw = bw.w
+	}
 	return bw, nil
 }
 
diff --git a/vendor/modules.txt b/vendor/modules.txt
index c0eb2e2f..63e96823 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -134,8 +134,8 @@ github.com/satori/go.uuid
 ## explicit; go 1.12
 # github.com/stretchr/testify v1.8.4
 ## explicit; go 1.20
-# github.com/ulikunitz/xz v0.5.4
-## explicit
+# github.com/ulikunitz/xz v0.5.8
+## explicit; go 1.12
 github.com/ulikunitz/xz
 github.com/ulikunitz/xz/internal/hash
 github.com/ulikunitz/xz/internal/xlog