diff --git a/go.mod b/go.mod
index 9b44eb4a..640e5cfb 100644
--- a/go.mod
+++ b/go.mod
@@ -32,15 +32,17 @@ require (
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/mitchellh/go-wordwrap v1.0.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/samber/lo v1.42.0 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
 	github.com/valyala/fasttemplate v1.2.2 // indirect
 	github.com/zclconf/go-cty v1.11.0 // indirect
 	go.uber.org/multierr v1.10.0 // indirect
 	golang.org/x/crypto v0.22.0 // indirect
-	golang.org/x/mod v0.15.0 // indirect
+	golang.org/x/exp v0.0.0-20220303212507-bbda1eaf7a17 // indirect
+	golang.org/x/mod v0.17.0 // indirect
 	golang.org/x/net v0.24.0 // indirect
 	golang.org/x/sys v0.19.0 // indirect
-	golang.org/x/text v0.14.0 // indirect
+	golang.org/x/text v0.16.0 // indirect
 	golang.org/x/time v0.5.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
diff --git a/go.sum b/go.sum
index 87c6233a..a93073bd 100644
--- a/go.sum
+++ b/go.sum
@@ -61,6 +61,8 @@ github.com/ncw/swift v1.0.53 h1:luHjjTNtekIEvHg5KdAFIBaH7bWfNkefwFnpDffSIks=
 github.com/ncw/swift v1.0.53/go.mod h1:23YIA4yWVnGwv2dQlN4bB7egfYX6YLn0Yo/S6zZO/ZM=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/samber/lo v1.42.0 h1:cuVp/4oZcTxK0w8vyj/MSEws9yTUjuTgZi7noEXMlZs=
+github.com/samber/lo v1.42.0/go.mod h1:w7R6fO7h2lrnx/s0bWcZ55vXJI89p5UPM6+kyDL373E=
 github.com/sergi/go-diff v1.0.0 h1:Kpca3qRNrduNnOQeazBd0ysaKrUJiIuISHxogkT9RPQ=
 github.com/sergi/go-diff v1.0.0/go.mod h1:0CfEIISq7TuYL3j771MWULgwwjU+GofnZX9QAmXWZgo=
 github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
@@ -82,9 +84,13 @@ golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACk
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.22.0 h1:g1v0xeRhjcugydODzvb3mEM9SQ0HGp9s/nh3COQ/C30=
 golang.org/x/crypto v0.22.0/go.mod h1:vr6Su+7cTlO45qkww3VDJlzDn0ctJvRgYbC2NvXHt+M=
+golang.org/x/exp v0.0.0-20220303212507-bbda1eaf7a17 h1:3MTrJm4PyNL9NBqvYDSj3DHl46qQakyfqfWo4jgfaEM=
+golang.org/x/exp v0.0.0-20220303212507-bbda1eaf7a17/go.mod h1:lgLbSvA5ygNOMpwM/9anMpWVlVJ7Z+cHWq/eFuinpGE=
 golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.15.0 h1:SernR4v+D55NyBH2QiEQrlBAnj1ECL6AGrA5+dPaMY8=
 golang.org/x/mod v0.15.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
+golang.org/x/mod v0.17.0 h1:zY54UmvipHiNd+pm+m0x9KhZ9hl1/7QNMyxXbc6ICqA=
+golang.org/x/mod v0.17.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
@@ -106,6 +112,8 @@ golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
 golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+golang.org/x/text v0.16.0 h1:a94ExnEXNtEwYLGJSIUxnWoxoRz/ZcCsV63ROupILh4=
+golang.org/x/text v0.16.0/go.mod h1:GhwF1Be+LQoKShO3cGOHzqOgRrGaYc9AvblQOmPVHnI=
 golang.org/x/time v0.5.0 h1:o7cqy6amK/52YcAKIPlM3a+Fpj35zvRj2TP+e1xFSfk=
 golang.org/x/time v0.5.0/go.mod h1:3BpzKBy/shNhVucY/MWOyx10tF3SFh9QdLuxbVysPQM=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
diff --git a/service/webhook.go b/service/webhook.go
index 2cce3d9b..6e0232eb 100644
--- a/service/webhook.go
+++ b/service/webhook.go
@@ -17,6 +17,7 @@ import (
 
 	"github.com/google/uuid"
 	"github.com/labstack/echo/v4"
+	"github.com/samber/lo"
 )
 
 type RequestApplication struct {
@@ -116,12 +117,12 @@ func WebhookEventHandler(c echo.Context, reqBody, resBody []byte) {
 				message += fmt.Sprintf("- 請求先グループ: %s", resApp.Group.Name) + "\n"
 			}
 
-			if resApp.Tags != nil {
-				message += "- タグ: "
-				for _, tag := range resApp.Tags {
-					message += tag.Name + ", "
-				}
-				message = message[:len(message)-len(", ")]
+			if resApp.Tags != nil  && len(resApp.Tags) != 0 {
+				
+				tags := lo.Map(resApp.Tags, func(tag *Tag, index int) string {
+					return tag.Name
+				})
+				message += fmt.Sprintf("- タグ: %s", strings.Join(tags, ", "))
 			}
 			message += "\n" + "\n"
 			message += resApp.Content + "\n"
@@ -159,16 +160,11 @@ func WebhookEventHandler(c echo.Context, reqBody, resBody []byte) {
 		if resApp.Group != nil {
 			message += fmt.Sprintf("- 関連するグループ: %s\n", resApp.Group.Name)
 		}
-		if resApp.Tags != nil {
-			tags := make([]string, len(resApp.Tags))
-			for i, tag := range resApp.Tags {
-				tags[i] = fmt.Sprintf(`%s`, tag.Name)
-			}
-			if len(resApp.Tags) == 0 {
-				message += fmt.Sprintf("")
-			} else {
-				message += fmt.Sprintf("- タグ: %s", strings.Join(tags, " "))
-			}
+		if resApp.Tags != nil && len(resApp.Tags) != 0 {
+			tags := lo.Map(resApp.Tags, func(tag *Tag, index int) string {
+				return tag.Name
+			})
+			message += fmt.Sprintf("- タグ: %s", strings.Join(tags, ", "))
 		}
 	}