diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7e22d6d..b17fcfc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 1.0.1 (November 6, 2019)
+
+Modified `scanFiles` function to return a list of file names where credit card numbers are found.
+
 ## 1.0.0 (October 29, 2019)
 
 Initial release! :tada:
diff --git a/package.json b/package.json
index 2fca017..7af80f6 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "ccscan",
   "description": "Scan files for credit card numbers",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "author": "Neo Financial Engineering <engineering@neofinancial.com>",
   "license": "MIT",
   "main": "build/app.js",
diff --git a/src/app.ts b/src/app.ts
index a1e067f..245afb7 100644
--- a/src/app.ts
+++ b/src/app.ts
@@ -105,9 +105,9 @@ const scanFile = async (fileName: string, args: Args): Promise<boolean> => {
   }
 };
 
-const scanFiles = async (args: Args): Promise<boolean> => {
+const scanFiles = async (args: Args): Promise<string[]> => {
   const mergedArgs = { ...defaultArgs, ...args };
-  let found = false;
+  const found = [];
 
   try {
     const pattern = [mergedArgs.files, '!node_modules'];
@@ -121,7 +121,7 @@ const scanFiles = async (args: Args): Promise<boolean> => {
 
     for (const fileName of files) {
       if (await scanFile(fileName, mergedArgs)) {
-        found = true;
+        found.push(fileName);
       }
     }
 
@@ -149,7 +149,7 @@ const run = async (): Promise<void> => {
           type: 'string'
         }),
       handler: async (args: Args): Promise<void> => {
-        if (await scanFiles(args)) {
+        if ((await scanFiles(args)).length > 0) {
           process.exit(1);
         }
       }
diff --git a/test/app.test.ts b/test/app.test.ts
index 518cb03..84d86be 100644
--- a/test/app.test.ts
+++ b/test/app.test.ts
@@ -6,7 +6,7 @@ let consoleLogSpy: jest.SpyInstance;
 
 const formatConsoleOutput = (consoleOutput: string[][]): string[] => {
   return consoleOutput.map((line: string[]): string => stripAnsi(line[0]));
-}
+};
 
 beforeAll(() => {
   consoleLogSpy = jest.spyOn(console, 'log').mockImplementation(() => {});
@@ -22,7 +22,9 @@ afterEach(() => {
 
 describe('TypeScript', () => {
   test('card numbers are detected', async () => {
-    expect(await scanFiles({ files: '**/test/fixtures/typescript/*.{ts,js}' })).toEqual(true);
+    expect(await scanFiles({ files: '**/test/fixtures/typescript/*.{ts,js}' })).toEqual([
+      'test/fixtures/typescript/bad.ts'
+    ]);
     expect(consoleLogSpy).toHaveBeenCalledTimes(12);
     expect(formatConsoleOutput(consoleLogSpy.mock.calls)).toMatchSnapshot();
   });
@@ -30,14 +32,14 @@ describe('TypeScript', () => {
   test('card numbers are detected in silent mode', async () => {
     expect(
       await scanFiles({ files: '**/test/fixtures/typescript/*.{ts,js}', silent: true })
-    ).toEqual(true);
+    ).toEqual(['test/fixtures/typescript/bad.ts']);
     expect(consoleLogSpy).not.toHaveBeenCalled();
   });
 
   test('card numbers are detected in verbose mode', async () => {
     expect(
       await scanFiles({ files: '**/test/fixtures/typescript/*.{ts,js}', verbose: true })
-    ).toEqual(true);
+    ).toEqual(['test/fixtures/typescript/bad.ts']);
     expect(consoleLogSpy).toHaveBeenCalledTimes(14);
     expect(formatConsoleOutput(consoleLogSpy.mock.calls)).toMatchSnapshot();
   });
@@ -45,13 +47,13 @@ describe('TypeScript', () => {
   test('card-like numbers are detected when luhn check is disabled', async () => {
     expect(
       await scanFiles({ files: '**/test/fixtures/typescript/*.{ts,js}', 'luhn-check': false })
-    ).toEqual(true);
+    ).toEqual(['test/fixtures/typescript/bad.ts', 'test/fixtures/typescript/questionable.ts']);
     expect(consoleLogSpy).toHaveBeenCalledTimes(23);
     expect(formatConsoleOutput(consoleLogSpy.mock.calls)).toMatchSnapshot();
   });
 
   test('card numbers are not detected when no files match pattern', async () => {
-    expect(await scanFiles({ files: '**/test/fixtures/typescript/*.js' })).toEqual(false);
+    expect(await scanFiles({ files: '**/test/fixtures/typescript/*.js' })).toEqual([]);
     expect(consoleLogSpy).toHaveBeenCalledTimes(0);
   });
 
@@ -61,14 +63,16 @@ describe('TypeScript', () => {
         files: '**/test/fixtures/typescript/*.{ts,js}',
         exclude: ['test/fixtures/typescript']
       })
-    ).toEqual(false);
+    ).toEqual([]);
     expect(consoleLogSpy).toHaveBeenCalledTimes(0);
   });
 });
 
 describe('JavaScript', () => {
   test('card numbers are detected', async () => {
-    expect(await scanFiles({ files: '**/test/fixtures/javascript/*.{ts,js}' })).toEqual(true);
+    expect(await scanFiles({ files: '**/test/fixtures/javascript/*.{ts,js}' })).toEqual([
+      'test/fixtures/javascript/bad.js'
+    ]);
     expect(consoleLogSpy).toHaveBeenCalledTimes(12);
     expect(formatConsoleOutput(consoleLogSpy.mock.calls)).toMatchSnapshot();
   });
@@ -76,14 +80,14 @@ describe('JavaScript', () => {
   test('card numbers are detected in silent mode', async () => {
     expect(
       await scanFiles({ files: '**/test/fixtures/javascript/*.{ts,js}', silent: true })
-    ).toEqual(true);
+    ).toEqual(['test/fixtures/javascript/bad.js']);
     expect(consoleLogSpy).not.toHaveBeenCalled();
   });
 
   test('card numbers are detected in verbose mode', async () => {
     expect(
       await scanFiles({ files: '**/test/fixtures/javascript/*.{ts,js}', verbose: true })
-    ).toEqual(true);
+    ).toEqual(['test/fixtures/javascript/bad.js']);
     expect(consoleLogSpy).toHaveBeenCalledTimes(14);
     expect(formatConsoleOutput(consoleLogSpy.mock.calls)).toMatchSnapshot();
   });
@@ -91,13 +95,13 @@ describe('JavaScript', () => {
   test('card-like numbers are detected when luhn check is disabled', async () => {
     expect(
       await scanFiles({ files: '**/test/fixtures/javascript/*.{ts,js}', 'luhn-check': false })
-    ).toEqual(true);
+    ).toEqual(['test/fixtures/javascript/bad.js', 'test/fixtures/javascript/questionable.js']);
     expect(consoleLogSpy).toHaveBeenCalledTimes(23);
     expect(formatConsoleOutput(consoleLogSpy.mock.calls)).toMatchSnapshot();
   });
 
   test('card numbers are not detected when no files match pattern', async () => {
-    expect(await scanFiles({ files: '**/test/fixtures/javascript/*.ts' })).toEqual(false);
+    expect(await scanFiles({ files: '**/test/fixtures/javascript/*.ts' })).toEqual([]);
     expect(consoleLogSpy).toHaveBeenCalledTimes(0);
   });
 
@@ -107,7 +111,7 @@ describe('JavaScript', () => {
         files: '**/test/fixtures/javascript/*.{ts,js}',
         exclude: ['test/fixtures/javascript']
       })
-    ).toEqual(false);
+    ).toEqual([]);
     expect(consoleLogSpy).toHaveBeenCalledTimes(0);
   });
 });