diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 47f6a23..7bdfdfa 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -14,7 +14,7 @@ jobs:
       - name: Set up Go 1.x
         uses: actions/setup-go@v2
         with:
-          go-version: ^1.18
+          go-version: ^1.19
         id: go
 
       - name: Check out code into the Go module directory
@@ -33,23 +33,25 @@ jobs:
           version=`git describe --tags $hash`
           flag="-s -w -X main.secret=${{ secrets.API_SECRET }} -X main.measurement=${{ secrets.MEASUREMENT }} -X main.version=$version"
           go mod tidy
-          GOOS=windows GOARCH=amd64 go build -ldflags "$flag" -o build/windows-amd64/kaf-cli.exe cmd/cli.go
-          GOOS=windows GOARCH=386   go build -ldflags "$flag" -o build/windows-386/kaf-cli.exe   cmd/cli.go
-          GOOS=linux   GOARCH=amd64 go build -ldflags "$flag" -o build/linux-amd64/kaf-cli cmd/cli.go
-          GOOS=linux   GOARCH=arm64 go build -ldflags "$flag" -o build/linux-arm64/kaf-cli cmd/cli.go
-          GOOS=darwin  GOARCH=amd64 go build -ldflags "$flag" -o build/darwin-amd64/kaf-cli cmd/cli.go
-          GOOS=darwin  GOARCH=arm64 go build -ldflags "$flag" -o build/darwin-arm64/kaf-cli cmd/cli.go
+          GOOS=windows GOARCH=amd64   go build -ldflags "$flag" -o build/windows-amd64/kaf-cli.exe cmd/cli.go
+          GOOS=windows GOARCH=386     go build -ldflags "$flag" -o build/windows-386/kaf-cli.exe   cmd/cli.go
+          GOOS=linux   GOARCH=amd64   go build -ldflags "$flag" -o build/linux-amd64/kaf-cli       cmd/cli.go
+          GOOS=linux   GOARCH=arm64   go build -ldflags "$flag" -o build/linux-arm64/kaf-cli       cmd/cli.go
+          GOOS=linux   GOARCH=loong64 go build -ldflags "$flag" -o build/linux-loong64/kaf-cli     cmd/cli.go
+          GOOS=darwin  GOARCH=amd64   go build -ldflags "$flag" -o build/darwin-amd64/kaf-cli      cmd/cli.go
+          GOOS=darwin  GOARCH=arm64   go build -ldflags "$flag" -o build/darwin-arm64/kaf-cli      cmd/cli.go
 
       - name: compression zip
         run: |
           hash=`git rev-list --tags --max-count=1`
           version=`git describe --tags $hash`
           zip -j kaf-cli_${version}_windows_amd64.zip build/windows-amd64/kaf-cli.exe windows/kindlegen.exe
-          zip -j kaf-cli_${version}_windows_386.zip build/windows-386/kaf-cli.exe windows/kindlegen.exe
-          zip -j kaf-cli_${version}_darwin_amd64.zip build/darwin-amd64/kaf-cli darwin/kindlegen
-          zip -j kaf-cli_${version}_darwin_arm64.zip build/darwin-arm64/kaf-cli darwin/kindlegen
-          zip -j kaf-cli_${version}_linux_amd64.zip build/linux-amd64/kaf-cli
-          zip -j kaf-cli_${version}_linux_arm64.zip build/linux-arm64/kaf-cli
+          zip -j kaf-cli_${version}_windows_386.zip   build/windows-386/kaf-cli.exe windows/kindlegen.exe
+          zip -j kaf-cli_${version}_darwin_amd64.zip  build/darwin-amd64/kaf-cli darwin/kindlegen
+          zip -j kaf-cli_${version}_darwin_arm64.zip  build/darwin-arm64/kaf-cli darwin/kindlegen
+          zip -j kaf-cli_${version}_linux_amd64.zip   build/linux-amd64/kaf-cli
+          zip -j kaf-cli_${version}_linux_arm64.zip   build/linux-arm64/kaf-cli
+          zip -j kaf-cli_${version}_linux_loong64.zip build/linux-loong64/kaf-cli
 
       - name: Upload release binaries
         uses: alexellis/upload-assets@0.2.2
diff --git a/convert.go b/convert.go
index 2453f47..0177e5a 100644
--- a/convert.go
+++ b/convert.go
@@ -320,7 +320,7 @@ func (book *Book) Convert() {
 	}
 
 	hasKinldegen := lookKindlegen()
-	if isMobi && hasKinldegen == "" {
+	if book.Format == "mobi" && hasKinldegen == "" {
 		isEpub = false
 	}
 
diff --git a/go.mod b/go.mod
index fdca7a5..f6aa688 100644
--- a/go.mod
+++ b/go.mod
@@ -6,9 +6,16 @@ require (
 	github.com/leotaku/mobi v0.0.0-20220405163106-82e29bde7964
 	github.com/ystyle/google-analytics v0.0.0-20210425064301-a7f754dd0649
 	golang.org/x/net v0.0.0-20210505024714-0287a6fb4125
+	golang.org/x/sys v0.0.0-20210423082822-04245dca01da
 	golang.org/x/text v0.3.7
 )
 
+require (
+	github.com/gabriel-vasile/mimetype v1.3.1 // indirect
+	github.com/gofrs/uuid v3.1.0+incompatible // indirect
+	github.com/vincent-petithory/dataurl v0.0.0-20191104211930-d1553a71de50 // indirect
+)
+
 replace golang.org/x/text => github.com/golang/text v0.3.2
 
-go 1.18
+go 1.19
diff --git a/go.sum b/go.sum
index 52f8afd..0c8d3c7 100644
--- a/go.sum
+++ b/go.sum
@@ -17,6 +17,7 @@ github.com/ystyle/google-analytics v0.0.0-20210425064301-a7f754dd0649/go.mod h1:
 golang.org/x/net v0.0.0-20210505024714-0287a6fb4125 h1:Ugb8sMTWuWRC3+sz5WeN/4kejDx9BvIwnPUiJBjJE+8=
 golang.org/x/net v0.0.0-20210505024714-0287a6fb4125/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210423082822-04245dca01da h1:b3NXsE2LusjYGGjL5bxEVZZORm/YEFFrWFjR8eFrw/c=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
diff --git a/tools.go b/tools.go
index 6803d49..e8fb6c9 100644
--- a/tools.go
+++ b/tools.go
@@ -2,11 +2,13 @@ package kafcli
 
 import (
 	"fmt"
+	"golang.org/x/sys/execabs"
 	"io/ioutil"
 	"math/rand"
 	"os"
 	"os/exec"
 	"path"
+	"runtime"
 	"strings"
 	"time"
 )
@@ -30,7 +32,10 @@ func run(command string, args ...string) error {
 
 func lookKindlegen() string {
 	command := "kindlegen"
-	kindlegen, err := exec.LookPath(command)
+	if runtime.GOOS == "windows" {
+		command = "kindlegen.exe"
+	}
+	kindlegen, err := execabs.LookPath(command)
 	if err != nil {
 		currentDir, err := os.Executable()
 		if err != nil {