diff --git a/packages/cli/src/config/config.ts b/packages/cli/src/config/config.ts
index f18ddcdf..17f14b54 100644
--- a/packages/cli/src/config/config.ts
+++ b/packages/cli/src/config/config.ts
@@ -175,7 +175,7 @@ export async function loadCliConfig(
     debugMode,
   );
 
-  const userAgent = await createUserAgent();
+  const userAgent = `GeminiCLI/${getCliVersion()}/(${process.platform}; ${process.arch})`;
   const apiKeyForServer = geminiApiKey || googleApiKey || '';
   const useVertexAI = hasGeminiApiKey ? false : undefined;
 
@@ -193,8 +193,6 @@ export async function loadCliConfig(
       originalModel = checkResult.originalModelIfSwitched;
       modelToUse = checkResult.effectiveModel;
     }
-  } else {
-    // logger.debug('API key not available during config load. Skipping model availability check.');
   }
 
   const configParams: ConfigParameters = {
@@ -237,8 +235,3 @@ export async function loadCliConfig(
     finalModel: modelToUse,
   };
 }
-
-async function createUserAgent(): Promise<string> {
-  const cliVersion = await getCliVersion();
-  return `GeminiCLI/${cliVersion} Node.js/${process.version} (${process.platform}; ${process.arch})`;
-}
diff --git a/packages/cli/src/gemini.tsx b/packages/cli/src/gemini.tsx
index 627f2915..309768f2 100644
--- a/packages/cli/src/gemini.tsx
+++ b/packages/cli/src/gemini.tsx
@@ -9,7 +9,6 @@ import { render } from 'ink';
 import { App } from './ui/App.js';
 import { loadCliConfig } from './config/config.js';
 import { readStdin } from './utils/readStdin.js';
-import { getCliVersion } from './utils/version.js';
 import { sandbox_command, start_sandbox } from './utils/sandbox.js';
 import { LoadedSettings, loadSettings } from './config/settings.js';
 import { themeManager } from './ui/themes/theme-manager.js';
@@ -101,14 +100,11 @@ export async function main() {
 
   // Render UI, passing necessary config values. Check that there is no command line question.
   if (process.stdin.isTTY && input?.length === 0) {
-    const cliVersion = await getCliVersion();
-
     render(
       <React.StrictMode>
         <App
           config={config}
           settings={settings}
-          cliVersion={cliVersion}
           startupWarnings={startupWarnings}
         />
       </React.StrictMode>,
diff --git a/packages/cli/src/ui/App.test.tsx b/packages/cli/src/ui/App.test.tsx
index 90adb24f..98d82be8 100644
--- a/packages/cli/src/ui/App.test.tsx
+++ b/packages/cli/src/ui/App.test.tsx
@@ -217,7 +217,6 @@ describe('App UI', () => {
       <App
         config={mockConfig as unknown as ServerConfig}
         settings={mockSettings}
-        cliVersion="1.0.0"
       />,
     );
     currentUnmount = unmount;
@@ -234,7 +233,6 @@ describe('App UI', () => {
       <App
         config={mockConfig as unknown as ServerConfig}
         settings={mockSettings}
-        cliVersion="1.0.0"
       />,
     );
     currentUnmount = unmount;
@@ -255,7 +253,6 @@ describe('App UI', () => {
       <App
         config={mockConfig as unknown as ServerConfig}
         settings={mockSettings}
-        cliVersion="1.0.0"
       />,
     );
     currentUnmount = unmount;
@@ -276,7 +273,6 @@ describe('App UI', () => {
       <App
         config={mockConfig as unknown as ServerConfig}
         settings={mockSettings}
-        cliVersion="1.0.0"
       />,
     );
     currentUnmount = unmount;
@@ -297,7 +293,6 @@ describe('App UI', () => {
       <App
         config={mockConfig as unknown as ServerConfig}
         settings={mockSettings}
-        cliVersion="1.0.0"
       />,
     );
     currentUnmount = unmount;
@@ -317,7 +312,6 @@ describe('App UI', () => {
       <App
         config={mockConfig as unknown as ServerConfig}
         settings={mockSettings}
-        cliVersion="1.0.0"
       />,
     );
     currentUnmount = unmount;
@@ -338,7 +332,6 @@ describe('App UI', () => {
       <App
         config={mockConfig as unknown as ServerConfig}
         settings={mockSettings}
-        cliVersion="1.0.0"
       />,
     );
     currentUnmount = unmount;
@@ -368,7 +361,6 @@ describe('App UI', () => {
         <App
           config={mockConfig as unknown as ServerConfig}
           settings={mockSettings}
-          cliVersion="1.0.0"
         />,
       );
       currentUnmount = unmount;
@@ -383,7 +375,6 @@ describe('App UI', () => {
         <App
           config={mockConfig as unknown as ServerConfig}
           settings={mockSettings}
-          cliVersion="1.0.0"
         />,
       );
       currentUnmount = unmount;
diff --git a/packages/cli/src/ui/App.tsx b/packages/cli/src/ui/App.tsx
index 2df5ba0a..37251634 100644
--- a/packages/cli/src/ui/App.tsx
+++ b/packages/cli/src/ui/App.tsx
@@ -55,16 +55,10 @@ const CTRL_C_PROMPT_DURATION_MS = 1000;
 interface AppProps {
   config: Config;
   settings: LoadedSettings;
-  cliVersion: string;
   startupWarnings?: string[];
 }
 
-export const App = ({
-  config,
-  settings,
-  cliVersion,
-  startupWarnings = [],
-}: AppProps) => {
+export const App = ({ config, settings, startupWarnings = [] }: AppProps) => {
   const { history, addItem, clearItems } = useHistory();
   const {
     consoleMessages,
@@ -196,7 +190,6 @@ export const App = ({
     openThemeDialog,
     performMemoryRefresh,
     toggleCorgiMode,
-    cliVersion,
   );
 
   const { streamingState, submitQuery, initError, pendingHistoryItems } =
diff --git a/packages/cli/src/ui/hooks/slashCommandProcessor.test.ts b/packages/cli/src/ui/hooks/slashCommandProcessor.test.ts
index a3babddf..1d33d218 100644
--- a/packages/cli/src/ui/hooks/slashCommandProcessor.test.ts
+++ b/packages/cli/src/ui/hooks/slashCommandProcessor.test.ts
@@ -115,7 +115,6 @@ describe('useSlashCommandProcessor', () => {
         mockOpenThemeDialog,
         mockPerformMemoryRefresh,
         mockCorgiMode,
-        'test-version',
       ),
     );
     return result.current;
@@ -253,8 +252,8 @@ describe('useSlashCommandProcessor', () => {
       description?: string,
       sandboxEnvVar?: string,
       seatbeltProfileVar?: string,
+      cliVersion?: string,
     ) => {
-      const cliVersion = 'test-version';
       const osVersion = 'test-platform test-node-version';
       let sandboxEnvStr = 'no sandbox';
       if (sandboxEnvVar && sandboxEnvVar !== 'sandbox-exec') {
@@ -293,12 +292,14 @@ Add any other context about the problem here.
     it('should call open with the correct GitHub issue URL and return true', async () => {
       process.env.SANDBOX = 'gemini-sandbox';
       process.env.SEATBELT_PROFILE = 'test_profile';
+      process.env.CLI_VERSION = 'test-version';
       const { handleSlashCommand } = getProcessor();
       const bugDescription = 'This is a test bug';
       const expectedUrl = getExpectedUrl(
         bugDescription,
         process.env.SANDBOX,
         process.env.SEATBELT_PROFILE,
+        process.env.CLI_VERSION,
       );
       let commandResult: SlashCommandActionReturn | boolean = false;
       await act(async () => {
diff --git a/packages/cli/src/ui/hooks/slashCommandProcessor.ts b/packages/cli/src/ui/hooks/slashCommandProcessor.ts
index 6de2ceab..01e04d70 100644
--- a/packages/cli/src/ui/hooks/slashCommandProcessor.ts
+++ b/packages/cli/src/ui/hooks/slashCommandProcessor.ts
@@ -14,6 +14,7 @@ import { Message, MessageType, HistoryItemWithoutId } from '../types.js';
 import { createShowMemoryAction } from './useShowMemoryCommand.js';
 import { GIT_COMMIT_INFO } from '../../generated/git-commit.js';
 import { formatMemoryUsage } from '../utils/formatters.js';
+import { getCliVersion } from '../../utils/version.js';
 
 export interface SlashCommandActionReturn {
   shouldScheduleTool?: boolean;
@@ -46,7 +47,6 @@ export const useSlashCommandProcessor = (
   openThemeDialog: () => void,
   performMemoryRefresh: () => Promise<void>,
   toggleCorgiMode: () => void,
-  cliVersion: string,
 ) => {
   const addMessage = useCallback(
     (message: Message) => {
@@ -193,7 +193,7 @@ export const useSlashCommandProcessor = (
         name: 'about',
         description: 'Show version info',
         action: (_mainCommand, _subCommand, _args) => {
-          const osVersion = `${process.platform} ${process.version}`;
+          const osVersion = process.platform;
           let sandboxEnv = 'no sandbox';
           if (process.env.SANDBOX && process.env.SANDBOX !== 'sandbox-exec') {
             sandboxEnv = process.env.SANDBOX;
@@ -201,7 +201,7 @@ export const useSlashCommandProcessor = (
             sandboxEnv = `sandbox-exec (${process.env.SEATBELT_PROFILE || 'unknown'})`;
           }
           const modelVersion = config?.getModel() || 'Unknown';
-
+          const cliVersion = getCliVersion();
           addMessage({
             type: MessageType.ABOUT,
             timestamp: new Date(),
@@ -231,6 +231,7 @@ export const useSlashCommandProcessor = (
           }
           const modelVersion = config?.getModel() || 'Unknown';
           const memoryUsage = formatMemoryUsage(process.memoryUsage().rss);
+          const cliVersion = getCliVersion();
 
           const diagnosticInfo = `
 ## Describe the bug
@@ -299,7 +300,6 @@ Add any other context about the problem here.
       addMessage,
       toggleCorgiMode,
       config,
-      cliVersion,
     ],
   );
 
diff --git a/packages/cli/src/utils/version.ts b/packages/cli/src/utils/version.ts
index 8ccc3737..50b69350 100644
--- a/packages/cli/src/utils/version.ts
+++ b/packages/cli/src/utils/version.ts
@@ -4,31 +4,6 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-import { readPackageUp } from 'read-package-up';
-import { fileURLToPath } from 'node:url';
-import { dirname } from 'node:path';
-
-const __filename = fileURLToPath(import.meta.url);
-const __dirname = dirname(__filename);
-
-let cliVersion: string | undefined;
-
-export async function getCliVersion(): Promise<string> {
-  if (cliVersion) {
-    return cliVersion;
-  }
-
-  if (process.env.CLI_VERSION) {
-    cliVersion = process.env.CLI_VERSION;
-    return cliVersion;
-  }
-
-  try {
-    const readUpResult = await readPackageUp({ cwd: __dirname });
-    cliVersion = readUpResult?.packageJson.version || 'unknown';
-  } catch (_e) {
-    cliVersion = 'unknown';
-  }
-
-  return cliVersion;
+export function getCliVersion(): string {
+  return process.env.CLI_VERSION || process.version;
 }
diff --git a/packages/core/src/config/config.ts b/packages/core/src/config/config.ts
index 0d69ac04..c25bc8fc 100644
--- a/packages/core/src/config/config.ts
+++ b/packages/core/src/config/config.ts
@@ -316,10 +316,9 @@ function findEnvFile(startDir: string): string | null {
 
 export function loadEnvironment(): void {
   const envFilePath = findEnvFile(process.cwd());
-  if (!envFilePath) {
-    return;
+  if (envFilePath) {
+    dotenv.config({ path: envFilePath });
   }
-  dotenv.config({ path: envFilePath });
 }
 
 export function createServerConfig(params: ConfigParameters): Config {