diff --git a/.gitignore b/.gitignore
index 586b3da964f6..77e793d8d509 100644
--- a/.gitignore
+++ b/.gitignore
@@ -31,3 +31,6 @@ test/e2e/**/packages
 
 # we use corepack, no need to commit yarn binary
 .yarn
+
+# Local vitest config overrides
+vitest.config.local.mts
diff --git a/docs/guides/impit-http-client/impit-http-client.mdx b/docs/guides/impit-http-client/impit-http-client.mdx
index 533d8dfd3817..89c71e82fa5d 100644
--- a/docs/guides/impit-http-client/impit-http-client.mdx
+++ b/docs/guides/impit-http-client/impit-http-client.mdx
@@ -68,22 +68,30 @@ The `ImpitHttpClient` constructor accepts the following options:
 
 | Option | Type | Default | Description |
 |--------|------|---------|-------------|
-| `browser` | `'chrome'` \| `'firefox'` | `undefined` | Browser to impersonate. Affects TLS fingerprint and default headers. |
+| `browser` | `'chrome'` \| `'firefox'` \| `...` | `undefined` | Browser to impersonate. Affects TLS fingerprint and default headers. |
 | `http3` | `boolean` | `false` | Enable HTTP/3 (QUIC) protocol support. |
 | `ignoreTlsErrors` | `boolean` | `false` | Ignore TLS certificate errors. Useful for testing or self-signed certificates. |
 
-### Browser impersonation
 
-Use the `Browser` enum to specify which browser to impersonate:
+### Available fingerprints
+
+Impit bundles several realistic browser fingerprints.
+Using version-specific fingerprints can improve success rates against sophisticated bot detection systems that track browser versions and flag outdated signatures.
+
+When using generic fingerprints (`chrome` or `firefox`), Impit automatically selects an appropriate version. For most use cases, the generic options are sufficient.
+However, if you're targeting a site with particularly strict bot detection, or need to match a specific browser environment, you can specify an exact version:
 
 ```ts
-import { ImpitHttpClient, Browser } from '@crawlee/impit-client';
+import { ImpitHttpClient } from '@crawlee/impit-client';
+
+// Use a generic Chrome fingerprint
+const chromeClient = new ImpitHttpClient({ browser: 'chrome' });
 
-// Impersonate Firefox
-const firefoxClient = new ImpitHttpClient({ browser: Browser.Firefox });
+// Use a specific Chrome version
+const chrome131Client = new ImpitHttpClient({ browser: 'chrome131' });
 
-// Impersonate Chrome
-const chromeClient = new ImpitHttpClient({ browser: Browser.Chrome });
+// Or a specific Firefox version
+const firefox144Client = new ImpitHttpClient({ browser: 'firefox144' });
 ```
 
 ### Advanced configuration
diff --git a/vitest.config.mts b/vitest.config.mts
index c53511c82e7b..d2fe69a598c0 100644
--- a/vitest.config.mts
+++ b/vitest.config.mts
@@ -1,7 +1,8 @@
+import { existsSync } from 'node:fs';
 import { resolve } from 'node:path';
 
 import isCI from 'is-ci';
-import { defineConfig } from 'vitest/config';
+import { defineConfig, mergeConfig } from 'vitest/config';
 
 let threads: { minThreads: number; maxThreads: number } | undefined;
 
@@ -10,7 +11,7 @@ if (isCI) {
     threads = { minThreads: 1, maxThreads: 1 };
 }
 
-export default defineConfig({
+const baseConfig = defineConfig({
     esbuild: {
         target: 'es2022',
         keepNames: true,
@@ -44,3 +45,16 @@ export default defineConfig({
         retry: process.env.RETRY_TESTS ? 3 : 0,
     },
 });
+
+// Check for local config override
+const localConfigPath = resolve(__dirname, './vitest.config.local.mts');
+let finalConfig = baseConfig;
+
+if (existsSync(localConfigPath)) {
+    const localConfigModule = await import(localConfigPath);
+    const localConfig = localConfigModule.default;
+    console.log(`Applying local vitest config overrides`);
+    finalConfig = mergeConfig(baseConfig, localConfig);
+}
+
+export default finalConfig;
diff --git a/website/versioned_docs/version-3.16/guides/impit-http-client/impit-http-client.mdx b/website/versioned_docs/version-3.16/guides/impit-http-client/impit-http-client.mdx
index 533d8dfd3817..89c71e82fa5d 100644
--- a/website/versioned_docs/version-3.16/guides/impit-http-client/impit-http-client.mdx
+++ b/website/versioned_docs/version-3.16/guides/impit-http-client/impit-http-client.mdx
@@ -68,22 +68,30 @@ The `ImpitHttpClient` constructor accepts the following options:
 
 | Option | Type | Default | Description |
 |--------|------|---------|-------------|
-| `browser` | `'chrome'` \| `'firefox'` | `undefined` | Browser to impersonate. Affects TLS fingerprint and default headers. |
+| `browser` | `'chrome'` \| `'firefox'` \| `...` | `undefined` | Browser to impersonate. Affects TLS fingerprint and default headers. |
 | `http3` | `boolean` | `false` | Enable HTTP/3 (QUIC) protocol support. |
 | `ignoreTlsErrors` | `boolean` | `false` | Ignore TLS certificate errors. Useful for testing or self-signed certificates. |
 
-### Browser impersonation
 
-Use the `Browser` enum to specify which browser to impersonate:
+### Available fingerprints
+
+Impit bundles several realistic browser fingerprints.
+Using version-specific fingerprints can improve success rates against sophisticated bot detection systems that track browser versions and flag outdated signatures.
+
+When using generic fingerprints (`chrome` or `firefox`), Impit automatically selects an appropriate version. For most use cases, the generic options are sufficient.
+However, if you're targeting a site with particularly strict bot detection, or need to match a specific browser environment, you can specify an exact version:
 
 ```ts
-import { ImpitHttpClient, Browser } from '@crawlee/impit-client';
+import { ImpitHttpClient } from '@crawlee/impit-client';
+
+// Use a generic Chrome fingerprint
+const chromeClient = new ImpitHttpClient({ browser: 'chrome' });
 
-// Impersonate Firefox
-const firefoxClient = new ImpitHttpClient({ browser: Browser.Firefox });
+// Use a specific Chrome version
+const chrome131Client = new ImpitHttpClient({ browser: 'chrome131' });
 
-// Impersonate Chrome
-const chromeClient = new ImpitHttpClient({ browser: Browser.Chrome });
+// Or a specific Firefox version
+const firefox144Client = new ImpitHttpClient({ browser: 'firefox144' });
 ```
 
 ### Advanced configuration