diff --git a/common/changes/@microsoft/rush/fix-change-file-timestamp-seconds_2026-06-03-00-00.json b/common/changes/@microsoft/rush/fix-change-file-timestamp-seconds_2026-06-03-00-00.json
new file mode 100644
index 0000000000..c77ac43a30
--- /dev/null
+++ b/common/changes/@microsoft/rush/fix-change-file-timestamp-seconds_2026-06-03-00-00.json
@@ -0,0 +1,11 @@
+{
+  "changes": [
+    {
+      "comment": "Include seconds in the generated change file name so that running `rush change` more than once in the same minute no longer silently overwrites the previously generated change file.",
+      "type": "minor",
+      "packageName": "@microsoft/rush"
+    }
+  ],
+  "packageName": "@microsoft/rush",
+  "email": "LeSingh1@users.noreply.github.com"
+}
diff --git a/libraries/rush-lib/src/api/ChangeFile.ts b/libraries/rush-lib/src/api/ChangeFile.ts
index d2022c7e90..1de74ec139 100644
--- a/libraries/rush-lib/src/api/ChangeFile.ts
+++ b/libraries/rush-lib/src/api/ChangeFile.ts
@@ -84,10 +84,15 @@ export class ChangeFile {
       console.log('Could not automatically detect git branch name, using timestamp instead.');
     }
 
-    // example filename: yourbranchname_2017-05-01-20-20.json
+    // The timestamp includes seconds so that running "rush change" more than once
+    // in the same minute produces distinct filenames. Without this, the "--overwrite"
+    // flag rarely had any effect, and a second invocation would silently clobber the
+    // change file written by the first one. See GitHub issue #2195.
+    // example filename: yourbranchname_2017-05-01-20-20-30.json
+    const timestamp: string | undefined = this._getTimestamp(true);
     const filename: string = branch
-      ? this._escapeFilename(`${branch}_${this._getTimestamp()}.json`)
-      : `${this._getTimestamp()}.json`;
+      ? this._escapeFilename(`${branch}_${timestamp}.json`)
+      : `${timestamp}.json`;
     const filePath: string = path.join(
       this._rushConfiguration.changesFolder,
       ...this._changeFileData.packageName.split('/'),
@@ -98,7 +103,7 @@ export class ChangeFile {
 
   /**
    * Gets the current time, formatted as YYYY-MM-DD-HH-MM
-   * Optionally will include seconds
+   * When useSeconds is true, the seconds are appended as well: YYYY-MM-DD-HH-MM-SS
    */
   private _getTimestamp(useSeconds: boolean = false): string | undefined {
     // Create a date string with the current time
@@ -120,7 +125,7 @@ export class ChangeFile {
       let formattedTime: string;
       if (useSeconds) {
         // formattedTime === "22-47-49"
-        formattedTime = matches[2].replace(':', '-');
+        formattedTime = matches[2].replace(/:/g, '-');
       } else {
         // formattedTime === "22-47"
         const timeParts: string[] = matches[2].split(':');
diff --git a/libraries/rush-lib/src/api/test/ChangeFile.test.ts b/libraries/rush-lib/src/api/test/ChangeFile.test.ts
index bbe1b9797f..8df693df8b 100644
--- a/libraries/rush-lib/src/api/test/ChangeFile.test.ts
+++ b/libraries/rush-lib/src/api/test/ChangeFile.test.ts
@@ -1,11 +1,42 @@
 // Copyright (c) Microsoft Corporation. All rights reserved. Licensed under the MIT license.
 // See LICENSE in the project root for license information.
 
+import type { GitRepoInfo } from 'git-repo-info';
+
 import { ChangeFile } from '../ChangeFile';
 import { RushConfiguration } from '../RushConfiguration';
 import { ChangeType } from '../ChangeManagement';
+import { Git } from '../../logic/Git';
 
 describe(ChangeFile.name, () => {
+  it('generates a path that includes seconds so repeated invocations do not collide', () => {
+    const rushFilename: string = `${__dirname}/repo/rush-npm.json`;
+    const rushConfiguration: RushConfiguration = RushConfiguration.loadFromConfigurationFile(rushFilename);
+
+    // Pin the branch name so the generated filename is deterministic.
+    jest.spyOn(Git.prototype, 'getGitInfo').mockReturnValue({ branch: 'my-branch' } as Readonly<GitRepoInfo>);
+
+    // Pin the clock to 2017-05-01 20:20:30 UTC so the timestamp is deterministic.
+    jest.useFakeTimers({
+      now: new Date('2017-05-01T20:20:30.000Z').getTime()
+    });
+
+    const changeFile: ChangeFile = new ChangeFile(
+      {
+        packageName: 'a',
+        changes: [],
+        email: 'fake@example.com'
+      },
+      rushConfiguration
+    );
+
+    const generatedPath: string = changeFile.generatePath();
+    // The seconds must be present and the filename must be fully dash-separated
+    // (no leftover colons from the time portion).
+    // Check toContain on the forward-slash-normalised path so it works on Windows too.
+    expect(generatedPath.replace(/\\/g, '/').endsWith('my-branch_2017-05-01-20-20-30.json')).toBe(true);
+  });
+
   it('can add a change', () => {
     const rushFilename: string = `${__dirname}/repo/rush-npm.json`;
     const rushConfiguration: RushConfiguration = RushConfiguration.loadFromConfigurationFile(rushFilename);