diff --git a/CHANGELOG.md b/CHANGELOG.md
index 755ca75..960d436 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.9.4
+
+* Fix: Drop x- prefix from unleash headers
+
 ## 1.9.3
 
 * Chore: Sync x-unleash-sdk version scheme with other SDKs
diff --git a/example/pubspec.lock b/example/pubspec.lock
index a623f84..5e8271a 100644
--- a/example/pubspec.lock
+++ b/example/pubspec.lock
@@ -355,7 +355,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "1.9.2"
+    version: "1.9.4"
   uuid:
     dependency: transitive
     description:
diff --git a/lib/metrics.dart b/lib/metrics.dart
index 6d10c23..127c47d 100644
--- a/lib/metrics.dart
+++ b/lib/metrics.dart
@@ -156,9 +156,9 @@ class Metrics {
       'Cache': 'no-cache',
       'Content-Type': 'application/json',
       'Authorization': clientKey,
-      'x-unleash-appname': appName,
-      'x-unleash-connection-id': connectionId,
-      'x-unleash-sdk': sdkName,
+      'unleash-appname': appName,
+      'unleash-connection-id': connectionId,
+      'unleash-sdk': sdkName,
     };
 
     final request =
diff --git a/lib/unleash_proxy_client_flutter.dart b/lib/unleash_proxy_client_flutter.dart
index 5bb075c..4fce242 100644
--- a/lib/unleash_proxy_client_flutter.dart
+++ b/lib/unleash_proxy_client_flutter.dart
@@ -157,7 +157,7 @@ class UnleashClient extends EventEmitter {
       this.customHeaders = const {},
       this.impressionDataAll = false,
       // bump on each release, overwrite in tests, do not change in client code
-      this.sdkName = 'unleash-client-flutter:1.9.3',
+      this.sdkName = 'unleash-client-flutter:1.9.4',
       this.experimental}) {
     _init();
     metrics = Metrics(
@@ -223,9 +223,9 @@ class UnleashClient extends EventEmitter {
       final headers = {
         'Accept': 'application/json',
         'Cache': 'no-cache',
-        'x-unleash-appname': appName,
-        'x-unleash-connection-id': connectionId,
-        'x-unleash-sdk': sdkName,
+        'unleash-appname': appName,
+        'unleash-connection-id': connectionId,
+        'unleash-sdk': sdkName,
       };
       headers[headerName] = clientKey;
       headers.addAll(customHeaders);
diff --git a/pubspec.yaml b/pubspec.yaml
index ed856a3..0510554 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -3,7 +3,7 @@ description: A Flutter/Dart client that can be used together with the unleash-pr
 homepage: https://github.com/Unleash/unleash_proxy_client_flutter
 repository: https://github.com/Unleash/unleash_proxy_client_flutter
 issue_tracker: https://github.com/Unleash/unleash_proxy_client_flutter
-version: 1.9.3
+version: 1.9.4
 
 environment:
   sdk: ">=2.18.0 <4.0.0"
diff --git a/test/unleash_proxy_client_flutter_test.dart b/test/unleash_proxy_client_flutter_test.dart
index 34080f7..a524242 100644
--- a/test/unleash_proxy_client_flutter_test.dart
+++ b/test/unleash_proxy_client_flutter_test.dart
@@ -195,9 +195,9 @@ void main() {
         {
           'Accept': 'AcceptType',
           'Cache': 'no-cache',
-          'x-unleash-appname': 'flutter-test',
-          'x-unleash-connection-id': '1234',
-          'x-unleash-sdk': 'unleash-client-flutter:1.0.0',
+          'unleash-appname': 'flutter-test',
+          'unleash-connection-id': '1234',
+          'unleash-sdk': 'unleash-client-flutter:1.0.0',
           'CustomHeader': 'CustomHeaderValue',
           'X-Custom': 'CustomExtension'
         }
@@ -227,9 +227,9 @@ void main() {
         {
           'Accept': 'application/json',
           'Cache': 'no-cache',
-          'x-unleash-appname': 'flutter-test',
-          'x-unleash-connection-id': '1234',
-          'x-unleash-sdk': 'unleash-client-flutter:1.0.0',
+          'unleash-appname': 'flutter-test',
+          'unleash-connection-id': '1234',
+          'unleash-sdk': 'unleash-client-flutter:1.0.0',
           'CustomHeader': 'proxy-123',
         }
       ]
@@ -1163,9 +1163,9 @@ void main() {
           {
             'Accept': 'application/json',
             'Cache': 'no-cache',
-            'x-unleash-appname': 'flutter-test',
-            'x-unleash-connection-id': '1234',
-            'x-unleash-sdk': 'unleash-client-flutter:1.0.0',
+            'unleash-appname': 'flutter-test',
+            'unleash-connection-id': '1234',
+            'unleash-sdk': 'unleash-client-flutter:1.0.0',
             'Authorization': 'proxy-123',
           }
         ],
@@ -1175,9 +1175,9 @@ void main() {
           {
             'Accept': 'application/json',
             'Cache': 'no-cache',
-            'x-unleash-appname': 'flutter-test',
-            'x-unleash-connection-id': '1234',
-            'x-unleash-sdk': 'unleash-client-flutter:1.0.0',
+            'unleash-appname': 'flutter-test',
+            'unleash-connection-id': '1234',
+            'unleash-sdk': 'unleash-client-flutter:1.0.0',
             'Authorization': 'proxy-123',
             'If-None-Match': 'ETagValue'
           }
@@ -1211,9 +1211,9 @@ void main() {
           {
             'Accept': 'application/json',
             'Cache': 'no-cache',
-            'x-unleash-appname': 'flutter-test',
-            'x-unleash-connection-id': '1234',
-            'x-unleash-sdk': 'unleash-client-flutter:1.0.0',
+            'unleash-appname': 'flutter-test',
+            'unleash-connection-id': '1234',
+            'unleash-sdk': 'unleash-client-flutter:1.0.0',
             'Authorization': 'proxy-123',
           }
         ],
@@ -1223,9 +1223,9 @@ void main() {
           {
             'Accept': 'application/json',
             'Cache': 'no-cache',
-            'x-unleash-appname': 'flutter-test',
-            'x-unleash-connection-id': '1234',
-            'x-unleash-sdk': 'unleash-client-flutter:1.0.0',
+            'unleash-appname': 'flutter-test',
+            'unleash-connection-id': '1234',
+            'unleash-sdk': 'unleash-client-flutter:1.0.0',
             'Authorization': 'proxy-123',
           }
         ]
@@ -1366,9 +1366,9 @@ void main() {
             'Accept': 'application/json',
             'Cache': 'no-cache',
             'Authorization': 'proxy-123',
-            'x-unleash-appname': 'flutter-test',
-            'x-unleash-connection-id': '1234',
-            'x-unleash-sdk': 'unleash-client-flutter:1.0.0',
+            'unleash-appname': 'flutter-test',
+            'unleash-connection-id': '1234',
+            'unleash-sdk': 'unleash-client-flutter:1.0.0',
           },
           payload
         ],
@@ -1419,9 +1419,9 @@ void main() {
             'Accept': 'application/json',
             'Cache': 'no-cache',
             'Authorization': 'proxy-123',
-            'x-unleash-appname': 'flutter-test',
-            'x-unleash-connection-id': '1234',
-            'x-unleash-sdk': 'unleash-client-flutter:1.0.0',
+            'unleash-appname': 'flutter-test',
+            'unleash-connection-id': '1234',
+            'unleash-sdk': 'unleash-client-flutter:1.0.0',
           },
           payload
         ],