diff --git a/.gitignore b/.gitignore
index 320e53e..1d74e21 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1 @@
-_testdata/
-_testdata2/
-logfmt-fuzz.zip
-logfmt.test.exe
+.vscode/
diff --git a/.travis.yml b/.travis.yml
index 25976da..5139309 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,6 +6,8 @@ go:
   - "1.9.x"
   - "1.10.x"
   - "1.11.x"
+  - "1.12.x"
+  - "1.13.x"
   - "tip"
 
 before_install:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3455b8e..1a9a27b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.5.0] - 2020-01-03
+
+### Changed
+- Remove the dependency on github.com/kr/logfmt by [@ChrisHines]
+- Move fuzz code to github.com/go-logfmt/fuzzlogfmt by [@ChrisHines]
+
 ## [0.4.0] - 2018-11-21
 
 ### Added
@@ -30,6 +36,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Decoder by [@ChrisHines]
 - MarshalKeyvals by [@ChrisHines]
 
+[0.5.0]: https://github.com/go-logfmt/logfmt/compare/v0.4.0...v0.5.0
 [0.4.0]: https://github.com/go-logfmt/logfmt/compare/v0.3.0...v0.4.0
 [0.3.0]: https://github.com/go-logfmt/logfmt/compare/v0.2.0...v0.3.0
 [0.2.0]: https://github.com/go-logfmt/logfmt/compare/v0.1.0...v0.2.0
diff --git a/decode-bench_test.go b/decode-bench_test.go
index f66dc25..96d6a81 100644
--- a/decode-bench_test.go
+++ b/decode-bench_test.go
@@ -1,11 +1,8 @@
 package logfmt
 
 import (
-	"bufio"
 	"bytes"
 	"testing"
-
-	kr "github.com/kr/logfmt"
 )
 
 func BenchmarkDecodeKeyval(b *testing.B) {
@@ -35,41 +32,3 @@ func BenchmarkDecodeKeyval(b *testing.B) {
 		}
 	}
 }
-
-func BenchmarkKRDecode(b *testing.B) {
-	const rows = 10000
-	data := []byte{}
-	for i := 0; i < rows; i++ {
-		data = append(data, "a=1 b=\"bar\" ƒ=2h3s r=\"esc\\tmore stuff\" d x=sf   \n"...)
-	}
-
-	b.SetBytes(int64(len(data)))
-	b.ResetTimer()
-	for i := 0; i < b.N; i++ {
-		var (
-			s   = bufio.NewScanner(bytes.NewReader(data))
-			err error
-			j   = 0
-			dh  discardHandler
-		)
-		for err == nil && s.Scan() {
-			err = kr.Unmarshal(s.Bytes(), &dh)
-			j++
-		}
-		if err == nil {
-			err = s.Err()
-		}
-		if err != nil {
-			b.Errorf("got %v, want %v", err, nil)
-		}
-		if j != rows {
-			b.Errorf("got %v, want %v", j, rows)
-		}
-	}
-}
-
-type discardHandler struct{}
-
-func (discardHandler) HandleLogfmt(key, val []byte) error {
-	return nil
-}
diff --git a/decode.go b/decode.go
index 04e0eff..2013708 100644
--- a/decode.go
+++ b/decode.go
@@ -79,7 +79,7 @@ key:
 			dec.pos += p
 			if dec.pos > start {
 				dec.key = line[start:dec.pos]
-				if multibyte && bytes.IndexRune(dec.key, utf8.RuneError) != -1 {
+				if multibyte && bytes.ContainsRune(dec.key, utf8.RuneError) {
 					dec.syntaxError(invalidKeyError)
 					return false
 				}
@@ -97,7 +97,7 @@ key:
 			dec.pos += p
 			if dec.pos > start {
 				dec.key = line[start:dec.pos]
-				if multibyte && bytes.IndexRune(dec.key, utf8.RuneError) != -1 {
+				if multibyte && bytes.ContainsRune(dec.key, utf8.RuneError) {
 					dec.syntaxError(invalidKeyError)
 					return false
 				}
@@ -110,7 +110,7 @@ key:
 	dec.pos = len(line)
 	if dec.pos > start {
 		dec.key = line[start:dec.pos]
-		if multibyte && bytes.IndexRune(dec.key, utf8.RuneError) != -1 {
+		if multibyte && bytes.ContainsRune(dec.key, utf8.RuneError) {
 			dec.syntaxError(invalidKeyError)
 			return false
 		}
diff --git a/fuzz.go b/fuzz.go
deleted file mode 100644
index 6553b35..0000000
--- a/fuzz.go
+++ /dev/null
@@ -1,126 +0,0 @@
-// +build gofuzz
-
-package logfmt
-
-import (
-	"bufio"
-	"bytes"
-	"fmt"
-	"io"
-	"reflect"
-
-	kr "github.com/kr/logfmt"
-)
-
-// Fuzz checks reserialized data matches
-func Fuzz(data []byte) int {
-	parsed, err := parse(data)
-	if err != nil {
-		return 0
-	}
-	var w1 bytes.Buffer
-	if err = write(parsed, &w1); err != nil {
-		panic(err)
-	}
-	parsed, err = parse(w1.Bytes())
-	if err != nil {
-		panic(err)
-	}
-	var w2 bytes.Buffer
-	if err = write(parsed, &w2); err != nil {
-		panic(err)
-	}
-	if !bytes.Equal(w1.Bytes(), w2.Bytes()) {
-		panic(fmt.Sprintf("reserialized data does not match:\n%q\n%q\n", w1.Bytes(), w2.Bytes()))
-	}
-	return 1
-}
-
-// FuzzVsKR checks go-logfmt/logfmt against kr/logfmt
-func FuzzVsKR(data []byte) int {
-	parsed, err := parse(data)
-	parsedKR, errKR := parseKR(data)
-
-	// github.com/go-logfmt/logfmt is a stricter parser. It returns errors for
-	// more inputs than github.com/kr/logfmt. Ignore any inputs that have a
-	// stict error.
-	if err != nil {
-		return 0
-	}
-
-	// Fail if the more forgiving parser finds an error not found by the
-	// stricter parser.
-	if errKR != nil {
-		panic(fmt.Sprintf("unmatched error: %v", errKR))
-	}
-
-	if !reflect.DeepEqual(parsed, parsedKR) {
-		panic(fmt.Sprintf("parsers disagree:\n%+v\n%+v\n", parsed, parsedKR))
-	}
-	return 1
-}
-
-type kv struct {
-	k, v []byte
-}
-
-func parse(data []byte) ([][]kv, error) {
-	var got [][]kv
-	dec := NewDecoder(bytes.NewReader(data))
-	for dec.ScanRecord() {
-		var kvs []kv
-		for dec.ScanKeyval() {
-			kvs = append(kvs, kv{dec.Key(), dec.Value()})
-		}
-		got = append(got, kvs)
-	}
-	return got, dec.Err()
-}
-
-func parseKR(data []byte) ([][]kv, error) {
-	var (
-		s   = bufio.NewScanner(bytes.NewReader(data))
-		err error
-		h   saveHandler
-		got [][]kv
-	)
-	for err == nil && s.Scan() {
-		h.kvs = nil
-		err = kr.Unmarshal(s.Bytes(), &h)
-		got = append(got, h.kvs)
-	}
-	if err == nil {
-		err = s.Err()
-	}
-	return got, err
-}
-
-type saveHandler struct {
-	kvs []kv
-}
-
-func (h *saveHandler) HandleLogfmt(key, val []byte) error {
-	if len(key) == 0 {
-		key = nil
-	}
-	if len(val) == 0 {
-		val = nil
-	}
-	h.kvs = append(h.kvs, kv{key, val})
-	return nil
-}
-
-func write(recs [][]kv, w io.Writer) error {
-	enc := NewEncoder(w)
-	for _, rec := range recs {
-		for _, f := range rec {
-			if err := enc.EncodeKeyval(f.k, f.v); err != nil {
-				return err
-			}
-		}
-		if err := enc.EndRecord(); err != nil {
-			return err
-		}
-	}
-	return nil
-}
diff --git a/go.mod b/go.mod
index 63d50f0..df71929 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,3 @@
 module github.com/go-logfmt/logfmt
 
-require github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515
+go 1.13
diff --git a/go.sum b/go.sum
deleted file mode 100644
index d0cdc16..0000000
--- a/go.sum
+++ /dev/null
@@ -1,2 +0,0 @@
-github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515 h1:T+h1c/A9Gawja4Y9mFVWj2vyii2bbUNDw3kt9VxK2EY=
-github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFBFZlji/RkVcI2GknAs/DXo4wKdlNEc=