diff --git a/go.mod b/go.mod
index 0f5ad99..8bf10e9 100644
--- a/go.mod
+++ b/go.mod
@@ -6,13 +6,12 @@ toolchain go1.26.4
 
 require (
 	github.com/bradleyfalzon/ghinstallation/v2 v2.19.0
-	github.com/google/go-github/v85 v85.0.0
+	github.com/google/go-github/v88 v88.0.0
 	github.com/k0kubun/pp/v3 v3.5.1
 )
 
 require (
 	github.com/golang-jwt/jwt/v4 v4.5.2 // indirect
-	github.com/google/go-github/v88 v88.0.0 // indirect
 	github.com/google/go-querystring v1.2.0 // indirect
 	github.com/mattn/go-colorable v0.1.14 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
diff --git a/go.sum b/go.sum
index b182d10..5b0c6ce 100644
--- a/go.sum
+++ b/go.sum
@@ -5,8 +5,6 @@ github.com/golang-jwt/jwt/v4 v4.5.2/go.mod h1:m21LjoU+eqJr34lmDMbreY2eSTRJ1cv77w
 github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
 github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
-github.com/google/go-github/v85 v85.0.0 h1:1+TLFX/akTFXK7o9Z9uAloQGufOn4ySa5DItUM1VWT4=
-github.com/google/go-github/v85 v85.0.0/go.mod h1:jYkBnqN+SzR2A2fGKYfbt6DEEQAyxeK0Q2XpPV9ZFsU=
 github.com/google/go-github/v88 v88.0.0 h1:dZA9IKkPK1eXZj4ypngnpRj5FwdpTv4whix2PrQMP7M=
 github.com/google/go-github/v88 v88.0.0/go.mod h1:rufTDgn2N45wjhukLTyxmvc9nilSp3mr3Rgtt6b1MPw=
 github.com/google/go-querystring v1.2.0 h1:yhqkPbu2/OH+V9BfpCVPZkNmUXhb2gBxJArfhIxNtP0=
diff --git a/main.go b/main.go
index eb8aad7..1f9a97a 100644
--- a/main.go
+++ b/main.go
@@ -10,7 +10,7 @@ import (
 	"time"
 
 	"github.com/bradleyfalzon/ghinstallation/v2"
-	"github.com/google/go-github/v85/github"
+	"github.com/google/go-github/v88/github"
 	"github.com/k0kubun/pp/v3"
 )
 
@@ -102,20 +102,25 @@ func showExport(token string) {
 }
 
 func showInstallations(appID int64, key []byte, githubURL string) {
-	atr, err := ghinstallation.NewAppsTransport(http.DefaultTransport, appID, key)
-	if err != nil {
-		log.Fatal(err)
+	atr, ghierr := ghinstallation.NewAppsTransport(http.DefaultTransport, appID, key)
+	if ghierr != nil {
+		log.Fatal(ghierr)
 	}
 
-	var client *github.Client
+	var (
+		client *github.Client
+		err    error
+	)
+
 	if githubURL != "" {
 		atr.BaseURL = githubURL
-		client, err = github.NewEnterpriseClient(githubURL, githubURL, &http.Client{Transport: atr})
-		if err != nil {
-			log.Fatalf("failed creating enterprise client: %v", err)
-		}
+		client, err = github.NewClient(github.WithEnterpriseURLs(githubURL, githubURL), github.WithTransport(atr))
 	} else {
-		client = github.NewClient(&http.Client{Transport: atr})
+		client, err = github.NewClient(github.WithTransport(atr))
+	}
+
+	if err != nil {
+		log.Fatalf("failed creating the client: %v", err)
 	}
 
 	opts := &github.ListOptions{