diff --git a/Dockerfile b/Dockerfile
index ff624c5..eabf9a2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@ FROM golang:1.21 as go
 FROM gcr.io/distroless/base-debian12 as run
 
 FROM go as build
-WORKDIR /go/src/github.com/sakajunquality/flow
+WORKDIR /go/src/github.com/sakajunquality/flow/v4
 
 COPY go.mod .
 COPY go.sum .
diff --git a/flow/process.go b/flow/process.go
index 86ce876..9d272e3 100644
--- a/flow/process.go
+++ b/flow/process.go
@@ -10,7 +10,7 @@ import (
 
 	"github.com/dlclark/regexp2"
 	"github.com/google/go-github/v57/github"
-	"github.com/sakajunquality/flow/gitbot"
+	"github.com/sakajunquality/flow/v4/gitbot"
 )
 
 type PullRequests []PullRequest
diff --git a/go.mod b/go.mod
index 9458717..d8daf4c 100644
--- a/go.mod
+++ b/go.mod
@@ -1,4 +1,4 @@
-module github.com/sakajunquality/flow
+module github.com/sakajunquality/flow/v4
 
 require (
 	github.com/GoogleCloudPlatform/berglas v1.0.3
diff --git a/main.go b/main.go
index 531ccec..f3a7175 100644
--- a/main.go
+++ b/main.go
@@ -13,7 +13,7 @@ import (
 	"github.com/go-chi/chi/v5/middleware"
 	"github.com/go-chi/render"
 	"github.com/sakajunquality/cloud-pubsub-events/gcrevent"
-	"github.com/sakajunquality/flow/flow"
+	"github.com/sakajunquality/flow/v4/flow"
 
 	"gopkg.in/yaml.v3"