diff --git a/internal/app/app.go b/internal/app/app.go
index da097231..2f5836a6 100644
--- a/internal/app/app.go
+++ b/internal/app/app.go
@@ -47,17 +47,18 @@ func NewClient(
 }
 
 // UpdateDefaultProjectFiles should update any project specific files if any
-func UpdateDefaultProjectFiles(fs afero.Fs, dirPath string, appDirName string) error {
+func UpdateDefaultProjectFiles(fs afero.Fs, dirPath string, appDirName string, displayName string) error {
 	// Files and their corresponding app name replacement functions
 	projectFiles := []struct {
 		filename string
 		replacer func([]byte, string) []byte
+		name     string
 	}{
-		{"manifest.json", regexReplaceAppNameInManifest},
-		{"manifest.js", regexReplaceAppNameInManifest},
-		{"manifest.ts", regexReplaceAppNameInManifest},
-		{"package.json", regexReplaceAppNameInPackageJSON},
-		{"pyproject.toml", regexReplaceAppNameInPyprojectToml},
+		{"manifest.json", regexReplaceAppNameInManifest, displayName},
+		{"manifest.js", regexReplaceAppNameInManifest, displayName},
+		{"manifest.ts", regexReplaceAppNameInManifest, displayName},
+		{"package.json", regexReplaceAppNameInPackageJSON, appDirName},
+		{"pyproject.toml", regexReplaceAppNameInPyprojectToml, appDirName},
 	}
 
 	for _, pf := range projectFiles {
@@ -67,7 +68,7 @@ func UpdateDefaultProjectFiles(fs afero.Fs, dirPath string, appDirName string) e
 			continue
 		}
 
-		fileData = pf.replacer(fileData, appDirName)
+		fileData = pf.replacer(fileData, pf.name)
 		if err := afero.WriteFile(fs, filePath, fileData, 0644); err != nil {
 			return err
 		}
diff --git a/internal/app/app_test.go b/internal/app/app_test.go
index c4720846..b14af730 100644
--- a/internal/app/app_test.go
+++ b/internal/app/app_test.go
@@ -16,24 +16,28 @@ package app
 
 import (
 	"fmt"
+	"os"
 	"path/filepath"
 	"testing"
 
 	"github.com/slackapi/slack-cli/internal/slackdeps"
 	"github.com/slackapi/slack-cli/test/testdata"
 	"github.com/spf13/afero"
+	"github.com/stretchr/testify/mock"
 	"github.com/stretchr/testify/require"
 )
 
 func Test_App_UpdateDefaultProjectFiles(t *testing.T) {
 	tests := map[string]struct {
 		appDirName        string
+		displayName       string
 		existingFiles     map[string]string
 		expectedFiles     map[string]string
 		expectedErrorType error
 	}{
 		"manifest.json file exists": {
-			appDirName: "vibrant-butterfly-1234",
+			appDirName:  "vibrant-butterfly-1234",
+			displayName: "Vibrant butterfly - 1234",
 			existingFiles: map[string]string{
 				"manifest.json": string(testdata.ManifestJSON),
 			},
@@ -43,7 +47,8 @@ func Test_App_UpdateDefaultProjectFiles(t *testing.T) {
 			expectedErrorType: nil,
 		},
 		"manifest.js file exists": {
-			appDirName: "vibrant-butterfly-1234",
+			appDirName:  "vibrant-butterfly-1234",
+			displayName: "Vibrant butterfly - 1234",
 			existingFiles: map[string]string{
 				"manifest.js": string(testdata.ManifestJS),
 			},
@@ -53,7 +58,8 @@ func Test_App_UpdateDefaultProjectFiles(t *testing.T) {
 			expectedErrorType: nil,
 		},
 		"manifest.ts file exists": {
-			appDirName: "vibrant-butterfly-1234",
+			appDirName:  "vibrant-butterfly-1234",
+			displayName: "Vibrant butterfly - 1234",
 			existingFiles: map[string]string{
 				"manifest.ts": string(testdata.ManifestTS),
 			},
@@ -63,7 +69,8 @@ func Test_App_UpdateDefaultProjectFiles(t *testing.T) {
 			expectedErrorType: nil,
 		},
 		"Multiple manifest files exist": {
-			appDirName: "vibrant-butterfly-1234",
+			appDirName:  "vibrant-butterfly-1234",
+			displayName: "Vibrant butterfly - 1234",
 			existingFiles: map[string]string{
 				"manifest.json": string(testdata.ManifestJSON),
 				"manifest.ts":   string(testdata.ManifestTS),
@@ -75,7 +82,8 @@ func Test_App_UpdateDefaultProjectFiles(t *testing.T) {
 			expectedErrorType: nil,
 		},
 		"package.json file exists": {
-			appDirName: "vibrant-butterfly-1234",
+			appDirName:  "vibrant-butterfly-1234",
+			displayName: "Vibrant butterfly - 1234",
 			existingFiles: map[string]string{
 				"package.json": string(testdata.PackageJSON),
 			},
@@ -85,7 +93,8 @@ func Test_App_UpdateDefaultProjectFiles(t *testing.T) {
 			expectedErrorType: nil,
 		},
 		"pyproject.toml file exists": {
-			appDirName: "vibrant-butterfly-1234",
+			appDirName:  "vibrant-butterfly-1234",
+			displayName: "Vibrant butterfly - 1234",
 			existingFiles: map[string]string{
 				"pyproject.toml": string(testdata.PyprojectTOML),
 			},
@@ -95,7 +104,8 @@ func Test_App_UpdateDefaultProjectFiles(t *testing.T) {
 			expectedErrorType: nil,
 		},
 		"Multiple project files exist": {
-			appDirName: "vibrant-butterfly-1234",
+			appDirName:  "vibrant-butterfly-1234",
+			displayName: "Vibrant butterfly - 1234",
 			existingFiles: map[string]string{
 				"manifest.json":  string(testdata.ManifestJSON),
 				"package.json":   string(testdata.PackageJSON),
@@ -110,20 +120,11 @@ func Test_App_UpdateDefaultProjectFiles(t *testing.T) {
 		},
 		"No manifest files exist": {
 			appDirName:        "vibrant-butterfly-1234",
+			displayName:       "Vibrant Butterfly 1234",
 			existingFiles:     map[string]string{},
 			expectedFiles:     map[string]string{},
 			expectedErrorType: nil,
 		},
-		"WriteFile error": {
-			appDirName: "vibrant-butterfly-1234",
-			existingFiles: map[string]string{
-				"manifest.json": string(testdata.ManifestJSON),
-			},
-			expectedFiles: map[string]string{
-				"manifest.json": string(testdata.ManifestJSONAppName),
-			},
-			expectedErrorType: nil,
-		},
 	}
 
 	for name, tc := range tests {
@@ -146,7 +147,7 @@ func Test_App_UpdateDefaultProjectFiles(t *testing.T) {
 			}
 
 			// Run the tests
-			err := UpdateDefaultProjectFiles(fs, projectDirPath, tc.appDirName)
+			err := UpdateDefaultProjectFiles(fs, projectDirPath, tc.appDirName, tc.displayName)
 
 			// Assertions
 			require.IsType(t, err, tc.expectedErrorType)
@@ -161,6 +162,21 @@ func Test_App_UpdateDefaultProjectFiles(t *testing.T) {
 	}
 }
 
+func Test_App_UpdateDefaultProjectFiles_WriteFileError(t *testing.T) {
+	fs := slackdeps.NewFsMock()
+	projectDirPath := "/path/to/project-name"
+
+	err := fs.MkdirAll(projectDirPath, 0755)
+	require.NoError(t, err)
+	err = afero.WriteFile(fs, filepath.Join(projectDirPath, "manifest.json"), testdata.ManifestJSON, 0644)
+	require.NoError(t, err)
+
+	fs.On("OpenFile", mock.Anything, mock.Anything, mock.Anything).Return((*os.File)(nil), os.ErrPermission)
+
+	err = UpdateDefaultProjectFiles(fs, projectDirPath, "vibrant-butterfly-1234", "Vibrant butterfly - 1234")
+	require.ErrorIs(t, err, os.ErrPermission)
+}
+
 func Test_RegexReplaceAppNameInManifest(t *testing.T) {
 	tests := map[string]struct {
 		src         []byte
@@ -169,22 +185,22 @@ func Test_RegexReplaceAppNameInManifest(t *testing.T) {
 	}{
 		"manifest.json is validate": {
 			src:         testdata.ManifestJSON,
-			appName:     "vibrant-butterfly-1234",
+			appName:     "Vibrant butterfly - 1234",
 			expectedSrc: testdata.ManifestJSONAppName,
 		},
 		"manifest.js is validate": {
 			src:         testdata.ManifestJS,
-			appName:     "vibrant-butterfly-1234",
+			appName:     "Vibrant butterfly - 1234",
 			expectedSrc: testdata.ManifestJSAppName,
 		},
 		"manifest.ts is validate": {
 			src:         testdata.ManifestTS,
-			appName:     "vibrant-butterfly-1234",
+			appName:     "Vibrant butterfly - 1234",
 			expectedSrc: testdata.ManifestTSAppName,
 		},
 		"manifest.ts with sdk is validate": {
 			src:         testdata.ManifestSDKTS,
-			appName:     "vibrant-butterfly-1234",
+			appName:     "Vibrant butterfly - 1234",
 			expectedSrc: testdata.ManifestSDKTSAppName,
 		},
 	}
diff --git a/internal/pkg/create/create.go b/internal/pkg/create/create.go
index f10e07ec..357785c3 100644
--- a/internal/pkg/create/create.go
+++ b/internal/pkg/create/create.go
@@ -150,7 +150,7 @@ func Create(ctx context.Context, clients *shared.ClientFactory, createArgs Creat
 	}()
 
 	// Update default project files' app name, bot name, etc
-	if err := app.UpdateDefaultProjectFiles(clients.Fs, projectDirPath, appDirName); err != nil {
+	if err := app.UpdateDefaultProjectFiles(clients.Fs, projectDirPath, appDirName, createArgs.AppName); err != nil {
 		return "", slackerror.Wrap(err, slackerror.ErrProjectFileUpdate)
 	}
 
diff --git a/test/testdata/manifest-app-name.js b/test/testdata/manifest-app-name.js
index 6cd7e6c6..5f3914e3 100644
--- a/test/testdata/manifest-app-name.js
+++ b/test/testdata/manifest-app-name.js
@@ -3,7 +3,7 @@ export default {
     major_version: 2
   },
   display_information: {
-    name: 'vibrant-butterfly-1234'
+    name: 'Vibrant butterfly - 1234'
   },
   // This is a comment
   features: {
@@ -13,7 +13,7 @@ export default {
       messages_tab_read_only_enabled: false
     },
     bot_user: {
-      display_name: 'vibrant-butterfly-1234'
+      display_name: 'Vibrant butterfly - 1234'
     }
   },
   functions: {
diff --git a/test/testdata/manifest-app-name.json b/test/testdata/manifest-app-name.json
index f9b9e097..fbc49b43 100644
--- a/test/testdata/manifest-app-name.json
+++ b/test/testdata/manifest-app-name.json
@@ -3,7 +3,7 @@
     "major_version": 2
   },
   "display_information": {
-    "name": "vibrant-butterfly-1234"
+    "name": "Vibrant butterfly - 1234"
   },
   "features": {
     "app_home": {
@@ -12,7 +12,7 @@
       "messages_tab_read_only_enabled": false
     },
     "bot_user": {
-      "display_name": "vibrant-butterfly-1234"
+      "display_name": "Vibrant butterfly - 1234"
     }
   },
   "functions": {
diff --git a/test/testdata/manifest-app-name.ts b/test/testdata/manifest-app-name.ts
index ca28ee87..429ea553 100644
--- a/test/testdata/manifest-app-name.ts
+++ b/test/testdata/manifest-app-name.ts
@@ -12,7 +12,7 @@ export default {
     "major_version": 2
   },
   "display_information": {
-    "name": "vibrant-butterfly-1234"
+    "name": "Vibrant butterfly - 1234"
   },
   // This is a comment
   "features": {
@@ -22,7 +22,7 @@ export default {
       "messages_tab_read_only_enabled": false
     },
     "bot_user": {
-      "display_name": "vibrant-butterfly-1234"
+      "display_name": "Vibrant butterfly - 1234"
     }
   },
   "functions": {
diff --git a/test/testdata/manifest-sdk-app-name.ts b/test/testdata/manifest-sdk-app-name.ts
index 1818b2ab..a8d9584a 100644
--- a/test/testdata/manifest-sdk-app-name.ts
+++ b/test/testdata/manifest-sdk-app-name.ts
@@ -11,7 +11,7 @@ const obj = {
 };
 
 export default Manifest({
-  "name": "vibrant-butterfly-1234",
+  "name": "Vibrant butterfly - 1234",
   "description": "Reverse a string",
   // "runtime_environment": "slack",
   "runtime": "deno1.x",