diff --git a/go.mod b/go.mod
index 50bbc8103250d8a2db2046647813493b4cb4f177..599170a97888c39f18de14c24d2e681b323dd5af 100644
--- a/go.mod
+++ b/go.mod
@@ -10,7 +10,7 @@ require (
 	github.com/google/subcommands v1.2.0
 	github.com/jmcvetta/randutil v0.0.0-20150817122601-2bb1b664bcff
 	github.com/kevinpollet/nego v0.0.0-20201213172553-d6ce2e30cfd6 // indirect
-	github.com/lpar/gzipped/v2 v2.0.2
+	github.com/lpar/gzipped/v2 v2.1.0
 	github.com/miekg/dns v1.1.45
 	github.com/prometheus/client_golang v1.11.0
 	github.com/prometheus/common v0.32.1
diff --git a/go.sum b/go.sum
index 6afbb04dabaf8f8cce1100d40d99cda6cbb94acb..d45802df445e04f6ab0f896cb0e2617bf61d0e3b 100644
--- a/go.sum
+++ b/go.sum
@@ -350,6 +350,8 @@ github.com/lightstep/lightstep-tracer-common/golang/gogo v0.0.0-20190605223551-b
 github.com/lightstep/lightstep-tracer-go v0.18.1/go.mod h1:jlF1pusYV4pidLvZ+XD0UBX0ZE6WURAspgAczcDHrL4=
 github.com/lpar/gzipped/v2 v2.0.2 h1:y7FjyTH07f8dX0YQ5o0sg2DTbRnmS3oT1pUvxViQ//o=
 github.com/lpar/gzipped/v2 v2.0.2/go.mod h1:qb7pLOGFgqz5w9xGGiiRFPxuGZ7GqWEuXUKXSbgonkQ=
+github.com/lpar/gzipped/v2 v2.1.0 h1:87/ug239roEqXLVOnXZg6NjDfFvMwmkGTKnFWJPUA9U=
+github.com/lpar/gzipped/v2 v2.1.0/go.mod h1:G3UlFoFYzjCx6NV4zDmD1BIWMNBaJuKoUvxrEWJuZ3Y=
 github.com/lyft/protoc-gen-validate v0.0.13/go.mod h1:XbGvPuh87YZc5TdIa2/I4pLk0QoUACkjt2znoq26NVQ=
 github.com/magiconair/properties v1.8.1/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
 github.com/mattn/go-colorable v0.0.9/go.mod h1:9vuHe8Xs5qXnSaW/c/ABM9alt+Vo+STaOChaDxuIBZU=
diff --git a/vendor/github.com/lpar/gzipped/v2/.gitattributes b/vendor/github.com/lpar/gzipped/v2/.gitattributes
new file mode 100644
index 0000000000000000000000000000000000000000..fa1385d99a319b43c06f5309d1aae9fdd3adea46
--- /dev/null
+++ b/vendor/github.com/lpar/gzipped/v2/.gitattributes
@@ -0,0 +1 @@
+* -text
diff --git a/vendor/github.com/lpar/gzipped/v2/.travis.yml b/vendor/github.com/lpar/gzipped/v2/.travis.yml
new file mode 100644
index 0000000000000000000000000000000000000000..f7a8f5c09cbd16723d407d4f41861dbda550e4dc
--- /dev/null
+++ b/vendor/github.com/lpar/gzipped/v2/.travis.yml
@@ -0,0 +1,13 @@
+language: go
+
+go:
+  - 1.x
+
+before_install:
+  - go get -t -v ./...
+
+script:
+  - go test -race -coverprofile=coverage.txt -covermode=atomic
+
+after_success:
+  - bash <(curl -s https://codecov.io/bash)
diff --git a/vendor/github.com/lpar/gzipped/v2/README.md b/vendor/github.com/lpar/gzipped/v2/README.md
index 6c55f14f45f6bc547ac343bb0bb721426918c4fd..b1cebd089efae070c179d2577d76126ebec3873b 100644
--- a/vendor/github.com/lpar/gzipped/v2/README.md
+++ b/vendor/github.com/lpar/gzipped/v2/README.md
@@ -1,4 +1,6 @@
 [![GoDoc](https://godoc.org/github.com/lpar/gzipped?status.svg)](https://godoc.org/github.com/lpar/gzipped)
+[![Build Status](https://travis-ci.org/lpar/gzipped.svg?branch=trunk)](https://travis-ci.org/lpar/gzipped)
+[![codecov](https://codecov.io/gh/lpar/gzipped/branch/trunk/graph/badge.svg)](https://codecov.io/gh/lpar/gzipped)
 
 # gzipped.FileServer
 
@@ -65,21 +67,21 @@ Accept-Encoding headers properly, and has unit tests.
 ## Caveats
 
 All requests are passed to Go's standard `http.ServeContent` method for
-fulfilment. MIME type sniffing, accept ranges, content negotiation and other
-tricky details are handled by that method.
+fulfilment. MIME type mapping, accept ranges, content negotiation and other
+tricky details are handled by that method. If the extension of a file doesn't have a defined MIME type, `ServeContent`'s sniffing may result in it assigning a MIME type such as `application/x-gzip` rather than what you might hope. See issue #18 for more information.
 
 It is up to you to ensure that your compressed and uncompressed resources are
 kept in sync.
 
 Directory browsing isn't supported. That includes remapping URLs ending in `/` to `index.html`, 
-`index.htm`, `Welcome.html` or whatever -- if you want URLs remapped that way,
+`index.htm`, `Welcome.html` or whatever — if you want URLs remapped that way,
 I suggest having your router do it, or using middleware, so that you have control
 over the behavior. For example, to add support for `index.html` files in directories:
 
 ```go
 func withIndexHTML(h http.Handler) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		if strings.HasSuffix(r.URL.Path, "/") {
+		if strings.HasSuffix(r.URL.Path, "/") || len(r.URL.Path) == 0 {
 			newpath := path.Join(r.URL.Path, "index.html")
 			r.URL.Path = newpath
 		}
diff --git a/vendor/github.com/lpar/gzipped/v2/filesystem.go b/vendor/github.com/lpar/gzipped/v2/filesystem.go
index 2faa408e710a00adffd6cf04d052ed8fa5ec16cc..4f268e26a1d940eba91434317179b27332ee0a66 100644
--- a/vendor/github.com/lpar/gzipped/v2/filesystem.go
+++ b/vendor/github.com/lpar/gzipped/v2/filesystem.go
@@ -1,6 +1,7 @@
 package gzipped
 
 import (
+	fs2 "io/fs"
 	"net/http"
 	"os"
 	"path"
@@ -29,13 +30,32 @@ func (d Dir) Exists(name string) bool {
 	}
 	fullName := filepath.Join(dir, filepath.FromSlash(path.Clean("/"+name)))
 	_, err := os.Stat(fullName)
-	if err != nil {
-		return false
-	}
-	return true
+	return err == nil
 }
 
 // Open defers to http.Dir's Open so that gzipped.Dir implements http.FileSystem.
 func (d Dir) Open(name string) (http.File, error) {
 	return http.Dir(d).Open(name)
 }
+
+func FS(f fs2.FS) FileSystem {
+	return fs{fs: f}
+}
+
+type fs struct {
+	fs fs2.FS
+}
+
+// Exists tests whether a file with the specified name exists, resolved relative to the file system.
+func (f fs) Exists(name string) bool {
+	if filepath.Separator != '/' && strings.ContainsRune(name, filepath.Separator) {
+		return false
+	}
+	_, err := fs2.Stat(f.fs, strings.TrimPrefix(filepath.FromSlash(path.Clean(name)), "/"))
+	return err == nil
+}
+
+// Open defers to http.FS's Open so that gzipped.fs implements http.FileSystem.
+func (f fs) Open(name string) (http.File, error) {
+	return http.FS(f.fs).Open(strings.TrimPrefix(name, "/"))
+}
diff --git a/vendor/github.com/lpar/gzipped/v2/go.mod b/vendor/github.com/lpar/gzipped/v2/go.mod
index 2723db0284743b408a0643d47eb121b65cc25f92..0a424450aeedb805e2a63d82930bb0e36f34ce8d 100644
--- a/vendor/github.com/lpar/gzipped/v2/go.mod
+++ b/vendor/github.com/lpar/gzipped/v2/go.mod
@@ -1,7 +1,5 @@
 module github.com/lpar/gzipped/v2
 
-require (
-	github.com/kevinpollet/nego v0.0.0-20200324111829-b3061ca9dd9d
-)
+require github.com/kevinpollet/nego v0.0.0-20200324111829-b3061ca9dd9d
 
-go 1.13
+go 1.18
diff --git a/vendor/github.com/lpar/gzipped/v2/go.sum b/vendor/github.com/lpar/gzipped/v2/go.sum
index bf153be61f065c2e5ee6710e11333b166057f4ac..28393a64fd6321016581507b9a38afa630cc6571 100644
--- a/vendor/github.com/lpar/gzipped/v2/go.sum
+++ b/vendor/github.com/lpar/gzipped/v2/go.sum
@@ -2,14 +2,11 @@ github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/kevinpollet/nego v0.0.0-20200324111829-b3061ca9dd9d h1:BaIpmhcqpBnz4+NZjUjVGxKNA+/E7ovKsjmwqjXcGYc=
 github.com/kevinpollet/nego v0.0.0-20200324111829-b3061ca9dd9d/go.mod h1:3FSWkzk9h42opyV0o357Fq6gsLF/A6MI/qOca9kKobY=
-github.com/lpar/accept v0.1.0 h1:q4+k1TJuCfoe8cIBRLTfiMMoiaHKpn1rlD1yYE/wj7o=
-github.com/lpar/accept v0.1.0/go.mod h1:/ZcJqAhzugu4J4EZ7hwixKslL0y07dMxQzIZZLpbZbk=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.5.1 h1:nOGnQDM7FYENwehXlg/kFVnos3rEvtKTjRvOWSzb6H4=
 github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
diff --git a/vendor/github.com/lpar/gzipped/v2/testdata/file.txt b/vendor/github.com/lpar/gzipped/v2/testdata/file.txt
new file mode 100644
index 0000000000000000000000000000000000000000..e1993644d07fc23b02cf1c6e59d16bc0cc1a2cec
--- /dev/null
+++ b/vendor/github.com/lpar/gzipped/v2/testdata/file.txt
@@ -0,0 +1 @@
+zyxwvutsrqponmlkjihgfedcba
diff --git a/vendor/github.com/lpar/gzipped/v2/testdata/file.txt.gz b/vendor/github.com/lpar/gzipped/v2/testdata/file.txt.gz
new file mode 100644
index 0000000000000000000000000000000000000000..c3cc069a60a682045d28f9ae3ea4221ffb4bb872
Binary files /dev/null and b/vendor/github.com/lpar/gzipped/v2/testdata/file.txt.gz differ
diff --git a/vendor/github.com/lpar/gzipped/v2/testdata/file2.txt b/vendor/github.com/lpar/gzipped/v2/testdata/file2.txt
new file mode 100644
index 0000000000000000000000000000000000000000..db38b549b14b6b50324e70223d57ac2c2414d162
--- /dev/null
+++ b/vendor/github.com/lpar/gzipped/v2/testdata/file2.txt
@@ -0,0 +1 @@
+1234567890987654321
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 9a1dc6d92e902b964b588421936bd96476a27c80..a0e46a32ea13d7ae8f414e1d5f0cacaf57602e90 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -58,7 +58,7 @@ github.com/json-iterator/go
 # github.com/kevinpollet/nego v0.0.0-20201213172553-d6ce2e30cfd6
 ## explicit
 github.com/kevinpollet/nego
-# github.com/lpar/gzipped/v2 v2.0.2
+# github.com/lpar/gzipped/v2 v2.1.0
 ## explicit
 github.com/lpar/gzipped/v2
 # github.com/matttproud/golang_protobuf_extensions v1.0.1