diff --git a/CHANGELOG.md b/CHANGELOG.md
index 40f7039..834c926 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@
 ## 20.3.1
 
 * Fix passing of `null` values and stripping only non-nullable optional parameters from the request body
+* Add `getScreenshot` method to `Avatars` service
+* Add `Theme`, `Timezone` and `Output` enums
 
 ## 20.3.0
 
diff --git a/docs/examples/avatars/get-screenshot.md b/docs/examples/avatars/get-screenshot.md
index 42a5ca7..0dc9b76 100644
--- a/docs/examples/avatars/get-screenshot.md
+++ b/docs/examples/avatars/get-screenshot.md
@@ -9,24 +9,27 @@ Avatars avatars = Avatars(client);
 // Downloading file
 Uint8List bytes = await avatars.getScreenshot(
     url: 'https://example.com',
-    headers: {}, // optional
-    viewportWidth: 1, // optional
-    viewportHeight: 1, // optional
-    scale: 0.1, // optional
+    headers: {
+        "Authorization": "Bearer token123",
+        "X-Custom-Header": "value"
+    }, // optional
+    viewportWidth: 1920, // optional
+    viewportHeight: 1080, // optional
+    scale: 2, // optional
     theme: Theme.light, // optional
-    userAgent: '<USER_AGENT>', // optional
-    fullpage: false, // optional
-    locale: '<LOCALE>', // optional
+    userAgent: 'Mozilla/5.0 (iPhone; CPU iPhone OS 14_0 like Mac OS X) AppleWebKit/605.1.15', // optional
+    fullpage: true, // optional
+    locale: 'en-US', // optional
     timezone: Timezone.africaAbidjan, // optional
-    latitude: -90, // optional
-    longitude: -180, // optional
-    accuracy: 0, // optional
-    touch: false, // optional
-    permissions: [], // optional
-    sleep: 0, // optional
-    width: 0, // optional
-    height: 0, // optional
-    quality: -1, // optional
+    latitude: 37.7749, // optional
+    longitude: -122.4194, // optional
+    accuracy: 100, // optional
+    touch: true, // optional
+    permissions: ["geolocation","notifications"], // optional
+    sleep: 3, // optional
+    width: 800, // optional
+    height: 600, // optional
+    quality: 85, // optional
     output: Output.jpg, // optional
 )
 
@@ -37,24 +40,27 @@ file.writeAsBytesSync(bytes);
 FutureBuilder(
     future: avatars.getScreenshot(
     url:'https://example.com' ,
-    headers:{} , // optional
-    viewportWidth:1 , // optional
-    viewportHeight:1 , // optional
-    scale:0.1 , // optional
+    headers:{
+        "Authorization": "Bearer token123",
+        "X-Custom-Header": "value"
+    } , // optional
+    viewportWidth:1920 , // optional
+    viewportHeight:1080 , // optional
+    scale:2 , // optional
     theme: Theme.light, // optional
-    userAgent:'<USER_AGENT>' , // optional
-    fullpage:false , // optional
-    locale:'<LOCALE>' , // optional
+    userAgent:'Mozilla/5.0 (iPhone; CPU iPhone OS 14_0 like Mac OS X) AppleWebKit/605.1.15' , // optional
+    fullpage:true , // optional
+    locale:'en-US' , // optional
     timezone: Timezone.africaAbidjan, // optional
-    latitude:-90 , // optional
-    longitude:-180 , // optional
-    accuracy:0 , // optional
-    touch:false , // optional
-    permissions:[] , // optional
-    sleep:0 , // optional
-    width:0 , // optional
-    height:0 , // optional
-    quality:-1 , // optional
+    latitude:37.7749 , // optional
+    longitude:-122.4194 , // optional
+    accuracy:100 , // optional
+    touch:true , // optional
+    permissions:["geolocation","notifications"] , // optional
+    sleep:3 , // optional
+    width:800 , // optional
+    height:600 , // optional
+    quality:85 , // optional
     output: Output.jpg, // optional
 ), // Works for both public file and private file, for private files you need to be logged in
     builder: (context, snapshot) {
diff --git a/lib/services/account.dart b/lib/services/account.dart
index fcd2ca6..c7997ec 100644
--- a/lib/services/account.dart
+++ b/lib/services/account.dart
@@ -301,7 +301,7 @@ class Account extends Service {
       'This API has been deprecated since 1.8.0. Please use `Account.createMFAChallenge` instead.')
   Future<models.MfaChallenge> createMfaChallenge(
       {required enums.AuthenticationFactor factor}) async {
-    const String apiPath = '/account/mfa/challenge';
+    const String apiPath = '/account/mfa/challenges';
 
     final Map<String, dynamic> apiParams = {
       'factor': factor.value,
@@ -322,7 +322,7 @@ class Account extends Service {
   /// method.
   Future<models.MfaChallenge> createMFAChallenge(
       {required enums.AuthenticationFactor factor}) async {
-    const String apiPath = '/account/mfa/challenge';
+    const String apiPath = '/account/mfa/challenges';
 
     final Map<String, dynamic> apiParams = {
       'factor': factor.value,
@@ -347,7 +347,7 @@ class Account extends Service {
       'This API has been deprecated since 1.8.0. Please use `Account.updateMFAChallenge` instead.')
   Future<models.Session> updateMfaChallenge(
       {required String challengeId, required String otp}) async {
-    const String apiPath = '/account/mfa/challenge';
+    const String apiPath = '/account/mfa/challenges';
 
     final Map<String, dynamic> apiParams = {
       'challengeId': challengeId,
@@ -371,7 +371,7 @@ class Account extends Service {
   /// method.
   Future<models.Session> updateMFAChallenge(
       {required String challengeId, required String otp}) async {
-    const String apiPath = '/account/mfa/challenge';
+    const String apiPath = '/account/mfa/challenges';
 
     final Map<String, dynamic> apiParams = {
       'challengeId': challengeId,