diff --git a/examples/simple/main.go b/examples/simple/main.go
index dd5bc1c..e457685 100644
--- a/examples/simple/main.go
+++ b/examples/simple/main.go
@@ -9,7 +9,7 @@ import (
 	"syscall"
 
 	"cloud.google.com/go/spanner"
-	"github.com/flowerinthenight/spindle"
+	"github.com/flowerinthenight/spindle/v2"
 )
 
 func main() {
@@ -36,7 +36,7 @@ func main() {
 	lock.Run(quit, done) // start main loop
 
 	go func() {
-		sigch := make(chan os.Signal)
+		sigch := make(chan os.Signal, 1)
 		signal.Notify(sigch, syscall.SIGINT, syscall.SIGTERM)
 		<-sigch
 		cancel()
diff --git a/examples/testlock/main.go b/examples/testlock/main.go
index 9037431..3844904 100644
--- a/examples/testlock/main.go
+++ b/examples/testlock/main.go
@@ -3,13 +3,13 @@ package main
 import (
 	"context"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"sync"
 	"time"
 
 	"cloud.google.com/go/spanner"
-	spindlelock "github.com/flowerinthenight/spindle/lock"
+	spindlelock "github.com/flowerinthenight/spindle/v2/lock"
 )
 
 func main() {
@@ -36,7 +36,7 @@ func main() {
 				Table:    "curmxdlock",
 				Name:     lockname,
 				Duration: 2000,
-				Logger:   log.New(ioutil.Discard, "", 0), // don't set if you want to see spindle logs
+				Logger:   log.New(io.Discard, "", 0), // don't set if you want to see spindle logs
 			})
 
 			ctx := context.Background()
diff --git a/go.mod b/go.mod
index 99eb5c0..a79dd15 100644
--- a/go.mod
+++ b/go.mod
@@ -1,10 +1,11 @@
-module github.com/flowerinthenight/spindle
+module github.com/flowerinthenight/spindle/v2
 
 go 1.21
 
 require (
 	cloud.google.com/go/spanner v1.64.0
 	github.com/cespare/xxhash/v2 v2.3.0
+	github.com/flowerinthenight/spindle v1.2.7
 	github.com/google/uuid v1.6.0
 	github.com/googleapis/gax-go/v2 v2.12.5
 	google.golang.org/api v0.187.0
@@ -16,8 +17,6 @@ require (
 	cloud.google.com/go/auth v0.6.1 // indirect
 	cloud.google.com/go/auth/oauth2adapt v0.2.2 // indirect
 	cloud.google.com/go/compute/metadata v0.4.0 // indirect
-	cloud.google.com/go/iam v1.1.10 // indirect
-	cloud.google.com/go/longrunning v0.5.9 // indirect
 	github.com/GoogleCloudPlatform/grpc-gcp-go/grpcgcp v1.5.0 // indirect
 	github.com/census-instrumentation/opencensus-proto v0.4.1 // indirect
 	github.com/cncf/xds/go v0.0.0-20240423153145-555b57ec207b // indirect
@@ -35,7 +34,6 @@ require (
 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.53.0 // indirect
 	go.opentelemetry.io/otel v1.28.0 // indirect
 	go.opentelemetry.io/otel/metric v1.28.0 // indirect
-	go.opentelemetry.io/otel/sdk v1.28.0 // indirect
 	go.opentelemetry.io/otel/trace v1.28.0 // indirect
 	golang.org/x/crypto v0.24.0 // indirect
 	golang.org/x/net v0.26.0 // indirect
@@ -45,7 +43,6 @@ require (
 	golang.org/x/text v0.16.0 // indirect
 	golang.org/x/time v0.5.0 // indirect
 	golang.org/x/xerrors v0.0.0-20231012003039-104605ab7028 // indirect
-	google.golang.org/genproto v0.0.0-20240701130421-f6361c86f094 // indirect
 	google.golang.org/genproto/googleapis/api v0.0.0-20240701130421-f6361c86f094 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20240701130421-f6361c86f094 // indirect
 	google.golang.org/grpc v1.65.0 // indirect
diff --git a/go.sum b/go.sum
index 5142570..f18f302 100644
--- a/go.sum
+++ b/go.sum
@@ -683,6 +683,8 @@ github.com/envoyproxy/protoc-gen-validate v1.0.4 h1:gVPz/FMfvh57HdSJQyvBtF00j8JU
 github.com/envoyproxy/protoc-gen-validate v1.0.4/go.mod h1:qys6tmnRsYrQqIhm2bvKZH4Blx/1gTIZ2UKVY1M+Yew=
 github.com/felixge/httpsnoop v1.0.4 h1:NFTV2Zj1bL4mc9sqWACXbQFVBBg2W3GPvqp8/ESS2Wg=
 github.com/felixge/httpsnoop v1.0.4/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
+github.com/flowerinthenight/spindle v1.2.7 h1:cSq4StAaiJBKQNt3ASJpK4H03jofU/FwsDhH3Wz3Igs=
+github.com/flowerinthenight/spindle v1.2.7/go.mod h1:kIJMeGJ/Sa9JHqohtHjf7CNXp8gB4aoOtUTpcW2a6/A=
 github.com/fogleman/gg v1.2.1-0.20190220221249-0403632d5b90/go.mod h1:R/bRT+9gY/C5z7JzPU0zXsXHKM4/ayA+zqcVNZzPa1k=
 github.com/fogleman/gg v1.3.0/go.mod h1:R/bRT+9gY/C5z7JzPU0zXsXHKM4/ayA+zqcVNZzPa1k=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=