diff --git a/cmd/export/main.go b/cmd/export/main.go
index db47be8..3b9a3e7 100644
--- a/cmd/export/main.go
+++ b/cmd/export/main.go
@@ -6,7 +6,13 @@ import (
 )
 
 func main() {
-	if err := hibpsync.Export(os.Stdout); err != nil {
+	dataDir := hibpsync.DefaultDataDir
+
+	if len(os.Args) == 2 {
+		dataDir = os.Args[1]
+	}
+
+	if err := hibpsync.Export(os.Stdout, hibpsync.ExportWithDataDir(dataDir)); err != nil {
 		_, _ = os.Stderr.WriteString("Failed to export HIBP data: " + err.Error())
 
 		os.Exit(1)
diff --git a/cmd/sync/main.go b/cmd/sync/main.go
index 12521e0..8c1f426 100644
--- a/cmd/sync/main.go
+++ b/cmd/sync/main.go
@@ -11,20 +11,26 @@ import (
 )
 
 func main() {
-	if err := run(); err != nil {
+	dataDir := hibpsync.DefaultDataDir
+
+	if len(os.Args) == 2 {
+		dataDir = os.Args[1]
+	}
+
+	if err := run(dataDir); err != nil {
 		_, _ = os.Stderr.WriteString("Failed to sync HIBP data: " + err.Error())
 
 		os.Exit(1)
 	}
 }
 
-func run() error {
-	stateFilePath := path.Dir(hibpsync.DefaultStateFile)
-	if err := os.MkdirAll(stateFilePath, 0o755); err != nil {
+func run(dataDir string) error {
+	stateFilePath := path.Join(dataDir, hibpsync.DefaultStateFileName)
+	if err := os.MkdirAll(path.Dir(stateFilePath), 0o755); err != nil {
 		return fmt.Errorf("creating state file directory %q: %w", stateFilePath, err)
 	}
 
-	stateFile, err := os.OpenFile(hibpsync.DefaultStateFile, os.O_RDWR|os.O_CREATE, 0644)
+	stateFile, err := os.OpenFile(stateFilePath, os.O_RDWR|os.O_CREATE, 0644)
 	if err != nil {
 		return fmt.Errorf("opening state file: %w", err)
 	}
@@ -58,12 +64,12 @@ func run() error {
 		return nil
 	}
 
-	if err := hibpsync.Sync(hibpsync.SyncWithProgressFn(updateProgressBar), hibpsync.SyncWithStateFile(stateFile)); err != nil {
+	if err := hibpsync.Sync(hibpsync.SyncWithDataDir(dataDir), hibpsync.SyncWithProgressFn(updateProgressBar), hibpsync.SyncWithStateFile(stateFile)); err != nil {
 		return fmt.Errorf("syncing: %w", err)
 	}
 
-	if err := os.Remove(hibpsync.DefaultStateFile); err != nil {
-		return fmt.Errorf("removing state file %q: %w", hibpsync.DefaultStateFile, err)
+	if err := os.Remove(stateFilePath); err != nil {
+		return fmt.Errorf("removing state file %q: %w", stateFilePath, err)
 	}
 
 	return nil
diff --git a/lib.go b/lib.go
index fda06ec..fb7d914 100644
--- a/lib.go
+++ b/lib.go
@@ -13,11 +13,11 @@ import (
 )
 
 const (
-	defaultDataDir   = "./.hibp-data"
-	defaultEndpoint  = "https://api.pwnedpasswords.com/range/"
-	defaultWorkers   = 50
-	DefaultStateFile = "./.hibp-data/state"
-	defaultLastRange = 0xFFFFF
+	DefaultDataDir       = "./.hibp-data"
+	defaultEndpoint      = "https://api.pwnedpasswords.com/range/"
+	defaultWorkers       = 50
+	DefaultStateFileName = "state"
+	defaultLastRange     = 0xFFFFF
 )
 
 type ProgressFunc func(lowest, current, to, processed, remaining int64) error
@@ -25,7 +25,7 @@ type ProgressFunc func(lowest, current, to, processed, remaining int64) error
 func Sync(options ...SyncOption) error {
 	config := &syncConfig{
 		commonConfig: commonConfig{
-			dataDir: defaultDataDir,
+			dataDir: DefaultDataDir,
 		},
 		ctx:        context.Background(),
 		endpoint:   defaultEndpoint,
@@ -73,7 +73,7 @@ func Sync(options ...SyncOption) error {
 func Export(w io.Writer, options ...ExportOption) error {
 	config := &exportConfig{
 		commonConfig: commonConfig{
-			dataDir: defaultDataDir,
+			dataDir: DefaultDataDir,
 		},
 	}
 
@@ -93,7 +93,7 @@ type RangeAPI struct {
 func NewRangeAPI(options ...QueryOption) *RangeAPI {
 	config := &queryConfig{
 		commonConfig: commonConfig{
-			dataDir: defaultDataDir,
+			dataDir: DefaultDataDir,
 		},
 	}