diff --git a/src/contributes/commandsBase.ts b/src/contributes/commandsBase.ts
index a41db38..6500daf 100644
--- a/src/contributes/commandsBase.ts
+++ b/src/contributes/commandsBase.ts
@@ -31,7 +31,13 @@ export function checkDevChatDependency(pythonCommand: string, showError: boolean
 
 	try {
 		// Check if DevChat is installed
-		runCommand(`"${devChat}" --help`);
+		const expectVersion = 'DevChat 0.1.15';
+		const devchatVersion = runCommand(`"${devChat}" --version`).toString().trim();
+		if (devchatVersion < expectVersion) {
+			logger.channel()?.info("devchat version: ${devchatVersion}, but expect version: ${expectVersion}");
+			return false;
+		}
+
 		logger.channel()?.info("devchat has installed.")
 		return true;
 	} catch(error) {
diff --git a/src/util/uiUtil_vscode.ts b/src/util/uiUtil_vscode.ts
index 92f5819..41fcf52 100644
--- a/src/util/uiUtil_vscode.ts
+++ b/src/util/uiUtil_vscode.ts
@@ -20,6 +20,7 @@ export class UiUtilVscode implements UiUtil {
 
 	public async updateConfiguration(key1: string, key2: string, value: string): Promise<void> {
 		await vscode.workspace.getConfiguration(key1).update(key2, value, vscode.ConfigurationTarget.Global);
+		await vscode.workspace.getConfiguration(key1).update(key2, value, vscode.ConfigurationTarget.Workspace);
 	}
 	public async secretStorageGet(key: string): Promise<string | undefined> {
 		try {
diff --git a/tools/install.py b/tools/install.py
index aa16245..f75d363 100644
--- a/tools/install.py
+++ b/tools/install.py
@@ -89,23 +89,23 @@ def pip_install_devchat(pythoncmd):
     # if not, install devchat
 
     # first step: check if devchat is installed
-    try:
-        # before command run, output runnning command
-        print("run command: ", pythoncmd, "-m", "pip", "show", "devchat")
-        subprocess.run([pythoncmd, "-m", "pip", "show", "devchat"], check=True, stdout=sys.stdout, stderr=sys.stderr, text=True)
+    # try:
+    #     # before command run, output runnning command
+    #     print("run command: ", pythoncmd, "-m", "pip", "show", "devchat")
+    #     subprocess.run([pythoncmd, "-m", "pip", "show", "devchat"], check=True, stdout=sys.stdout, stderr=sys.stderr, text=True)
         
-        pipCommandEnv = pythoncmd.replace("/python", "/devchat")
-        print("==> devchatCommandEnv: ", pipCommandEnv)
+    #     pipCommandEnv = pythoncmd.replace("/python", "/devchat")
+    #     print("==> devchatCommandEnv: ", pipCommandEnv)
         
-        return True
-    except Exception as error:
-        # devchat is not installed
-        print('devchat is not installed')
-        print(error)
-        pass
+    #     return True
+    # except Exception as error:
+    #     # devchat is not installed
+    #     print('devchat is not installed')
+    #     print(error)
+    #     pass
     
     # second step: install devchat
-    if (pip_cmd_with_retries([pythoncmd, "-m", "pip", "install", "devchat"], 3, False)):
+    if (pip_cmd_with_retries([pythoncmd, "-m", "pip", "install", "devchat", "--force"], 3, False)):
         pip_command_env = pythoncmd.replace("/python", "/devchat")
         print("==> devchatCommandEnv: ", pip_command_env)
         return True