diff --git a/autodeploy.go b/autodeploy.go
index 3b9cf304..f9b2596f 100644
--- a/autodeploy.go
+++ b/autodeploy.go
@@ -54,7 +54,7 @@ func (a AutoDeploy) checkAndDeploy(dp DeployProject, phase DeployPhase) {
 		log.Print(err)
 		return
 	}
-	tag, err := ecr.FindImageTagByRegexp(dp.ECRRegistryId(), dp.ECRRepository(), dp.FilterRegexp(), dp.TargetRegexp(), ImageTagVars{Branch: dp.DefaultBranch()})
+	tag, err := ecr.FindImageTagByRegexp(dp.ECRRegistryId(), dp.ECRRepository(), dp.ImageTagRegexp(), dp.TargetRegexp(), ImageTagVars{Branch: dp.DefaultBranch()})
 	if currentTag == tag || err != nil {
 		log.Printf("[INFO] Auto Deploy (%s:%s) is skipped", dp.ID, phase.Name)
 		return
diff --git a/model_combine.go b/model_combine.go
index 12d30588..c44e3c77 100644
--- a/model_combine.go
+++ b/model_combine.go
@@ -45,7 +45,7 @@ func (self ModelCombine) Deploy(pj DeployProject, phase string, option DeployOpt
 	if err != nil {
 		return o, err
 	}
-	option.Tag, err = ecr.FindImageTagByRegexp(pj.ECRRegistryId(), pj.ECRRepository(), pj.FilterRegexp(), pj.TargetRegexp(), ImageTagVars{Branch: option.Branch, Phase: phase})
+	option.Tag, err = ecr.FindImageTagByRegexp(pj.ECRRegistryId(), pj.ECRRepository(), pj.ImageTagRegexp(), pj.TargetRegexp(), ImageTagVars{Branch: option.Branch, Phase: phase})
 	if err != nil {
 		return o, err
 	}
diff --git a/model_job.go b/model_job.go
index ff81412c..dc1b989d 100644
--- a/model_job.go
+++ b/model_job.go
@@ -49,7 +49,7 @@ func (self ModelJob) Deploy(pj DeployProject, phase string, option DeployOption)
 		if err != nil {
 			return o, err
 		}
-		tag, err = ecr.FindImageTagByRegexp(pj.ECRRegistryId(), pj.ECRRepository(), pj.FilterRegexp(), pj.TargetRegexp(), ImageTagVars{Branch: option.Branch, Phase: phase})
+		tag, err = ecr.FindImageTagByRegexp(pj.ECRRegistryId(), pj.ECRRepository(), pj.ImageTagRegexp(), pj.TargetRegexp(), ImageTagVars{Branch: option.Branch, Phase: phase})
 		if err != nil {
 			return o, err
 		}
diff --git a/model_kustomize.go b/model_kustomize.go
index fc98d062..eb0927d6 100644
--- a/model_kustomize.go
+++ b/model_kustomize.go
@@ -36,7 +36,7 @@ func (self ModelKustomize) Prepare(pj DeployProject, phase string, branch string
 		if err != nil {
 			return o, err
 		}
-		tag, err = ecr.FindImageTagByRegexp(pj.ECRRegistryId(), pj.ECRRepository(), pj.FilterRegexp(), pj.TargetRegexp(), ImageTagVars{Branch: branch, Phase: phase})
+		tag, err = ecr.FindImageTagByRegexp(pj.ECRRegistryId(), pj.ECRRepository(), pj.ImageTagRegexp(), pj.TargetRegexp(), ImageTagVars{Branch: branch, Phase: phase})
 		if err != nil {
 			return o, err
 		}
diff --git a/model_lambda.go b/model_lambda.go
index 249313b0..db3a89f9 100644
--- a/model_lambda.go
+++ b/model_lambda.go
@@ -36,7 +36,7 @@ func (self ModelLambda) Deploy(pj DeployProject, phase string, option DeployOpti
 		if err != nil {
 			return o, err
 		}
-		tag, err = ecr.FindImageTagByRegexp(pj.ECRRegistryId(), pj.ECRRepository(), pj.FilterRegexp(), pj.TargetRegexp(), ImageTagVars{Branch: option.Branch, Phase: phase})
+		tag, err = ecr.FindImageTagByRegexp(pj.ECRRegistryId(), pj.ECRRepository(), pj.ImageTagRegexp(), pj.TargetRegexp(), ImageTagVars{Branch: option.Branch, Phase: phase})
 		if err != nil {
 			return o, err
 		}
diff --git a/project.go b/project.go
index a236afd3..2a34c19c 100644
--- a/project.go
+++ b/project.go
@@ -74,7 +74,15 @@ func (pj DeployProject) Steps() []string {
 	return pj.steps
 }
 
-func (pj DeployProject) FilterRegexp() string {
+// ImageTagRegexp returns the regexp to filter image tags.
+// This regexp is used to find the image tag from ECR.
+// The regexp is parsed as a template, and the following variables are available:
+//
+//	{{.Branch}}: The branch name of the target commit.
+//	{{.Phase}}: The phase name.
+//
+// See ECRClient.FindImageTagByRegexp for more details on how the regexp is used.
+func (pj DeployProject) ImageTagRegexp() string {
 	if pj.filterRegexp == "" {
 		return "^{{.Branch}}$"
 	}