diff --git a/go.mod b/go.mod
index 6bbbde87..d42c1927 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,7 @@ go 1.12
 
 require (
 	github.com/pkg/errors v0.8.1
-	github.com/spf13/afero v1.1.2
+	github.com/spf13/afero v1.2.2
 	github.com/spf13/cobra v0.0.5
 	github.com/spf13/viper v1.4.0
 	github.com/stretchr/testify v1.2.2
diff --git a/go.sum b/go.sum
index 1eaf6f20..0a1a1f92 100644
--- a/go.sum
+++ b/go.sum
@@ -83,6 +83,7 @@ github.com/soheilhy/cmux v0.1.4/go.mod h1:IM3LyeVVIOuxMH7sFAkER9+bJ4dT7Ms6E4xg4k
 github.com/spaolacci/murmur3 v0.0.0-20180118202830-f09979ecbc72/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
 github.com/spf13/afero v1.1.2 h1:m8/z1t7/fwjysjQRYbP0RD+bUIF/8tJwPdEZsI83ACI=
 github.com/spf13/afero v1.1.2/go.mod h1:j4pytiNVoe2o6bmDsKpLACNPDBIoEAkihy7loJ1B0CQ=
+github.com/spf13/afero v1.2.2/go.mod h1:9ZxEEn6pIJ8Rxe320qSDBk6AsU0r9pR7Q4OcevTdifk=
 github.com/spf13/cast v1.3.0 h1:oget//CVOEoFewqQxwr0Ej5yjygnqGkvggSE/gB35Q8=
 github.com/spf13/cast v1.3.0/go.mod h1:Qx5cxh0v+4UWYiBimWS+eyWzqEqokIECu5etghLkUJE=
 github.com/spf13/cobra v0.0.5 h1:f0B+LkLX6DtmRH1isoNA9VTtNUK9K8xYd28JNNfOv/s=
diff --git a/vendor/github.com/spf13/afero/copyOnWriteFs.go b/vendor/github.com/spf13/afero/copyOnWriteFs.go
index 9aef3979..e8108a85 100644
--- a/vendor/github.com/spf13/afero/copyOnWriteFs.go
+++ b/vendor/github.com/spf13/afero/copyOnWriteFs.go
@@ -267,7 +267,7 @@ func (u *CopyOnWriteFs) Mkdir(name string, perm os.FileMode) error {
 		return u.layer.MkdirAll(name, perm)
 	}
 	if dir {
-		return syscall.EEXIST
+		return ErrFileExists
 	}
 	return u.layer.MkdirAll(name, perm)
 }
@@ -282,7 +282,8 @@ func (u *CopyOnWriteFs) MkdirAll(name string, perm os.FileMode) error {
 		return u.layer.MkdirAll(name, perm)
 	}
 	if dir {
-		return syscall.EEXIST
+		// This is in line with how os.MkdirAll behaves.
+		return nil
 	}
 	return u.layer.MkdirAll(name, perm)
 }
diff --git a/vendor/github.com/spf13/afero/go.mod b/vendor/github.com/spf13/afero/go.mod
index 9eff4fed..08685509 100644
--- a/vendor/github.com/spf13/afero/go.mod
+++ b/vendor/github.com/spf13/afero/go.mod
@@ -1 +1,3 @@
 module github.com/spf13/afero
+
+require golang.org/x/text v0.3.0
diff --git a/vendor/github.com/spf13/afero/go.sum b/vendor/github.com/spf13/afero/go.sum
new file mode 100644
index 00000000..6bad37b2
--- /dev/null
+++ b/vendor/github.com/spf13/afero/go.sum
@@ -0,0 +1,2 @@
+golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
diff --git a/vendor/github.com/spf13/afero/unionFile.go b/vendor/github.com/spf13/afero/unionFile.go
index 1e78f7d1..eda96312 100644
--- a/vendor/github.com/spf13/afero/unionFile.go
+++ b/vendor/github.com/spf13/afero/unionFile.go
@@ -155,7 +155,8 @@ var defaultUnionMergeDirsFn = func(lofi, bofi []os.FileInfo) ([]os.FileInfo, err
 }
 
 // Readdir will weave the two directories together and
-// return a single view of the overlayed directories
+// return a single view of the overlayed directories.
+// At the end of the directory view, the error is io.EOF if c > 0.
 func (f *UnionFile) Readdir(c int) (ofi []os.FileInfo, err error) {
 	var merge DirsMerger = f.Merger
 	if merge == nil {
@@ -185,9 +186,23 @@ func (f *UnionFile) Readdir(c int) (ofi []os.FileInfo, err error) {
 		}
 		f.files = append(f.files, merged...)
 	}
-	if c == -1 {
+
+	if c <= 0 && len(f.files) == 0 {
+		return f.files, nil
+	}
+
+	if f.off >= len(f.files) {
+		return nil, io.EOF
+	}
+
+	if c <= 0 {
 		return f.files[f.off:], nil
 	}
+
+	if c > len(f.files) {
+		c = len(f.files)
+	}
+
 	defer func() { f.off += c }()
 	return f.files[f.off:c], nil
 }
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 1b9506ad..b7ef6b5f 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -25,7 +25,7 @@ github.com/pelletier/go-toml
 github.com/pkg/errors
 # github.com/pmezard/go-difflib v1.0.0
 github.com/pmezard/go-difflib/difflib
-# github.com/spf13/afero v1.1.2
+# github.com/spf13/afero v1.2.2
 github.com/spf13/afero
 github.com/spf13/afero/mem
 # github.com/spf13/cast v1.3.0