diff --git a/go.mod b/go.mod
index f1b53efcf04..14153a45710 100644
--- a/go.mod
+++ b/go.mod
@@ -53,7 +53,7 @@ require (
 	github.com/acomagu/bufpipe v1.0.3 // indirect
 	github.com/emirpasic/gods v1.18.1 // indirect
 	github.com/go-git/gcfg v1.5.0 // indirect
-	github.com/go-git/go-billy/v5 v5.3.1
+	github.com/go-git/go-billy/v5 v5.4.0
 	github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99 // indirect
 	github.com/kevinburke/ssh_config v1.2.0 // indirect
 	github.com/sergi/go-diff v1.2.0 // indirect
diff --git a/go.sum b/go.sum
index 0fb48eab885..9bd8593ad9a 100644
--- a/go.sum
+++ b/go.sum
@@ -431,8 +431,9 @@ github.com/gliderlabs/ssh v0.3.5 h1:OcaySEmAQJgyYcArR+gGGTHCyE7nvhEMTlYY+Dp8CpY=
 github.com/gliderlabs/ssh v0.3.5/go.mod h1:8XB4KraRrX39qHhT6yxPsHedjA08I/uBVwj4xC+/+z4=
 github.com/go-git/gcfg v1.5.0 h1:Q5ViNfGF8zFgyJWPqYwA7qGFoMTEiBmdlkcfRmpIMa4=
 github.com/go-git/gcfg v1.5.0/go.mod h1:5m20vg6GwYabIxaOonVkTdrILxQMpEShl1xiMF4ua+E=
-github.com/go-git/go-billy/v5 v5.3.1 h1:CPiOUAzKtMRvolEKw+bG1PLRpT7D3LIs3/3ey4Aiu34=
 github.com/go-git/go-billy/v5 v5.3.1/go.mod h1:pmpqyWchKfYfrkb/UVH4otLvyi/5gJlGI4Hb3ZqZ3W0=
+github.com/go-git/go-billy/v5 v5.4.0 h1:Vaw7LaSTRJOUric7pe4vnzBSgyuf2KrLsu2Y4ZpQBDE=
+github.com/go-git/go-billy/v5 v5.4.0/go.mod h1:vjbugF6Fz7JIflbVpl1hJsGjSHNltrSw45YK/ukIvQg=
 github.com/go-git/go-git-fixtures/v4 v4.3.1 h1:y5z6dd3qi8Hl+stezc8p3JxDkoTRqMAlKnXHuzrfjTQ=
 github.com/go-git/go-git-fixtures/v4 v4.3.1/go.mod h1:8LHG1a3SRW71ettAD/jW13h8c6AqjVSeL11RAdgaqpo=
 github.com/go-git/go-git/v5 v5.5.1 h1:5vtv2TB5PM/gPM+EvsHJ16hJh4uAkdGcKilcwY7FYwo=
diff --git a/vendor/github.com/go-git/go-billy/v5/Makefile b/vendor/github.com/go-git/go-billy/v5/Makefile
new file mode 100644
index 00000000000..74dad8b4910
--- /dev/null
+++ b/vendor/github.com/go-git/go-billy/v5/Makefile
@@ -0,0 +1,11 @@
+# Go parameters
+GOCMD = go
+GOTEST = $(GOCMD) test 
+
+.PHONY: test
+test:
+	$(GOTEST) -race ./...
+
+test-coverage:
+	echo "" > $(COVERAGE_REPORT); \
+	$(GOTEST) -coverprofile=$(COVERAGE_REPORT) -coverpkg=./... -covermode=$(COVERAGE_MODE) ./...
diff --git a/vendor/github.com/go-git/go-billy/v5/memfs/storage.go b/vendor/github.com/go-git/go-billy/v5/memfs/storage.go
index d3ff5a25db6..e3c4e38bff2 100644
--- a/vendor/github.com/go-git/go-billy/v5/memfs/storage.go
+++ b/vendor/github.com/go-git/go-billy/v5/memfs/storage.go
@@ -6,6 +6,7 @@ import (
 	"io"
 	"os"
 	"path/filepath"
+	"sync"
 )
 
 type storage struct {
@@ -174,6 +175,8 @@ func clean(path string) string {
 type content struct {
 	name  string
 	bytes []byte
+
+	m sync.RWMutex
 }
 
 func (c *content) WriteAt(p []byte, off int64) (int, error) {
@@ -185,6 +188,7 @@ func (c *content) WriteAt(p []byte, off int64) (int, error) {
 		}
 	}
 
+	c.m.Lock()
 	prev := len(c.bytes)
 
 	diff := int(off) - prev
@@ -196,6 +200,7 @@ func (c *content) WriteAt(p []byte, off int64) (int, error) {
 	if len(c.bytes) < prev {
 		c.bytes = c.bytes[:prev]
 	}
+	c.m.Unlock()
 
 	return len(p), nil
 }
@@ -209,8 +214,10 @@ func (c *content) ReadAt(b []byte, off int64) (n int, err error) {
 		}
 	}
 
+	c.m.RLock()
 	size := int64(len(c.bytes))
 	if off >= size {
+		c.m.RUnlock()
 		return 0, io.EOF
 	}
 
@@ -220,10 +227,12 @@ func (c *content) ReadAt(b []byte, off int64) (n int, err error) {
 	}
 
 	btr := c.bytes[off : off+l]
+	n = copy(b, btr)
+
 	if len(btr) < len(b) {
 		err = io.EOF
 	}
-	n = copy(b, btr)
+	c.m.RUnlock()
 
 	return
 }
diff --git a/vendor/github.com/go-git/go-billy/v5/util/walk.go b/vendor/github.com/go-git/go-billy/v5/util/walk.go
new file mode 100644
index 00000000000..1531bcaaaeb
--- /dev/null
+++ b/vendor/github.com/go-git/go-billy/v5/util/walk.go
@@ -0,0 +1,72 @@
+package util
+
+import (
+	"os"
+	"path/filepath"
+
+	"github.com/go-git/go-billy/v5"
+)
+
+// walk recursively descends path, calling walkFn
+// adapted from https://golang.org/src/path/filepath/path.go
+func walk(fs billy.Filesystem, path string, info os.FileInfo, walkFn filepath.WalkFunc) error {
+	if !info.IsDir() {
+		return walkFn(path, info, nil)
+	}
+
+	names, err := readdirnames(fs, path)
+	err1 := walkFn(path, info, err)
+	// If err != nil, walk can't walk into this directory.
+	// err1 != nil means walkFn want walk to skip this directory or stop walking.
+	// Therefore, if one of err and err1 isn't nil, walk will return.
+	if err != nil || err1 != nil {
+		// The caller's behavior is controlled by the return value, which is decided
+		// by walkFn. walkFn may ignore err and return nil.
+		// If walkFn returns SkipDir, it will be handled by the caller.
+		// So walk should return whatever walkFn returns.
+		return err1
+	}
+
+	for _, name := range names {
+		filename := filepath.Join(path, name)
+		fileInfo, err := fs.Lstat(filename)
+		if err != nil {
+			if err := walkFn(filename, fileInfo, err); err != nil && err != filepath.SkipDir {
+				return err
+			}
+		} else {
+			err = walk(fs, filename, fileInfo, walkFn)
+			if err != nil {
+				if !fileInfo.IsDir() || err != filepath.SkipDir {
+					return err
+				}
+			}
+		}
+	}
+	return nil
+}
+
+// Walk walks the file tree rooted at root, calling fn for each file or 
+// directory in the tree, including root. All errors that arise visiting files
+// and directories are filtered by fn: see the WalkFunc documentation for
+// details.
+//
+// The files are walked in lexical order, which makes the output deterministic
+// but requires Walk to read an entire directory into memory before proceeding
+// to walk that directory. Walk does not follow symbolic links.
+// 
+// Function adapted from https://github.com/golang/go/blob/3b770f2ccb1fa6fecc22ea822a19447b10b70c5c/src/path/filepath/path.go#L500
+func Walk(fs billy.Filesystem, root string, walkFn filepath.WalkFunc) error {
+	info, err := fs.Lstat(root)
+	if err != nil {
+		err = walkFn(root, nil, err)
+	} else {
+		err = walk(fs, root, info, walkFn)
+	}
+	
+	if err == filepath.SkipDir {
+		return nil
+	}
+	
+	return err
+}
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 3e28353b10a..1fab2b03048 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -289,7 +289,7 @@ github.com/go-git/gcfg
 github.com/go-git/gcfg/scanner
 github.com/go-git/gcfg/token
 github.com/go-git/gcfg/types
-# github.com/go-git/go-billy/v5 v5.3.1
+# github.com/go-git/go-billy/v5 v5.4.0
 ## explicit; go 1.13
 github.com/go-git/go-billy/v5
 github.com/go-git/go-billy/v5/helper/chroot