diff --git a/.changelog/5976-fix-fluent-theme-require-export.md b/.changelog/5976-fix-fluent-theme-require-export.md
new file mode 100644
index 0000000000..fefa76b1ec
--- /dev/null
+++ b/.changelog/5976-fix-fluent-theme-require-export.md
@@ -0,0 +1,3 @@
+### Fixed
+
+- Fixed `require()` failing to resolve `botframework-webchat-fluent-theme`, in PR [#5976](https://github.com/microsoft/BotFramework-WebChat/pull/5976), by [@OEvgeny](https://github.com/OEvgeny)
diff --git a/packages/fluent-theme/package.json b/packages/fluent-theme/package.json
index 4459882a22..54563a0caf 100644
--- a/packages/fluent-theme/package.json
+++ b/packages/fluent-theme/package.json
@@ -13,7 +13,7 @@
         "types": "./dist/botframework-webchat-fluent-theme.d.mts",
         "default": "./dist/botframework-webchat-fluent-theme.mjs"
       },
-      "required": {
+      "require": {
         "types": "./dist/botframework-webchat-fluent-theme.d.ts",
         "default": "./dist/botframework-webchat-fluent-theme.js"
       }
diff --git a/packages/fluent-theme/src/__tests__/packageExports.spec.js b/packages/fluent-theme/src/__tests__/packageExports.spec.js
new file mode 100644
index 0000000000..dc108e99c0
--- /dev/null
+++ b/packages/fluent-theme/src/__tests__/packageExports.spec.js
@@ -0,0 +1,9 @@
+/** @jest-environment @happy-dom/jest-environment */
+
+test('require() should load the CommonJS entrypoint', () => {
+  expect(require.resolve('botframework-webchat-fluent-theme')).toMatch(
+    /[/\\]dist[/\\]botframework-webchat-fluent-theme\.js$/u
+  );
+
+  expect(require('botframework-webchat-fluent-theme').buildInfo).toHaveProperty('moduleFormat', 'commonjs');
+});