diff --git a/modules/swagger-codegen/src/main/resources/dart/api_client.mustache b/modules/swagger-codegen/src/main/resources/dart/api_client.mustache
index 7ab9ae90c710..e8e6a515b44c 100644
--- a/modules/swagger-codegen/src/main/resources/dart/api_client.mustache
+++ b/modules/swagger-codegen/src/main/resources/dart/api_client.mustache
@@ -153,4 +153,12 @@ class ApiClient {
       auth.applyToParams(queryParams, headerParams);
     });
   }
+
+  void setAccessToken(String accessToken) {
+    _authentications.forEach((key, auth) {
+      if (auth is OAuth) {
+        auth.setAccessToken(accessToken);
+      }
+    });
+  }
 }
diff --git a/modules/swagger-codegen/src/main/resources/dart/auth/oauth.mustache b/modules/swagger-codegen/src/main/resources/dart/auth/oauth.mustache
index 4b26a7a8ddf9..5b96ecc9d7a9 100644
--- a/modules/swagger-codegen/src/main/resources/dart/auth/oauth.mustache
+++ b/modules/swagger-codegen/src/main/resources/dart/auth/oauth.mustache
@@ -1,9 +1,19 @@
 part of {{pubName}}.api;
 
 class OAuth implements Authentication {
+  String accessToken;
+
+  OAuth({this.accessToken}) {
+  }
 
   @override
   void applyToParams(List<QueryParam> queryParams, Map<String, String> headerParams) {
-    // TODO: support oauth
+    if (accessToken != null) {
+      headerParams["Authorization"] = "Bearer " + accessToken;
+    }
+  }
+
+  void setAccessToken(String accessToken) {
+    this.accessToken = accessToken;
   }
 }