diff --git a/packages/bruno-converters/src/utils/bruno-to-postman-translator.js b/packages/bruno-converters/src/utils/bruno-to-postman-translator.js
index 68c52aa4a..351535ea0 100644
--- a/packages/bruno-converters/src/utils/bruno-to-postman-translator.js
+++ b/packages/bruno-converters/src/utils/bruno-to-postman-translator.js
@@ -70,7 +70,7 @@ const simpleTranslations = {
   'req.headers': 'pm.request.headers',
   'req.body': 'pm.request.body',
   'req.getHeader': 'pm.request.headers.get',
-  'req.setHeader': 'pm.request.headers.set',
+  // Note: req.setHeader is handled in complexTransformations because it needs arg restructuring (two args -> object)
   'req.deleteHeader': 'pm.request.headers.remove',
 
   // URL helper methods
@@ -318,6 +318,28 @@ const complexTransformations = [
       return updateCall;
     }
   },
+  // req.setHeader(key, value) -> pm.request.headers.upsert({key: key, value: value})
+  {
+    pattern: 'req.setHeader',
+    transform: (path) => {
+      const args = path.value.arguments;
+      if (!args || args.length < 2) {
+        return j.callExpression(
+          buildMemberExpressionFromString('pm.request.headers.upsert'),
+          args || []
+        );
+      }
+      return j.callExpression(
+        buildMemberExpressionFromString('pm.request.headers.upsert'),
+        [
+          j.objectExpression([
+            j.property('init', j.identifier('key'), args[0]),
+            j.property('init', j.identifier('value'), args[1])
+          ])
+        ]
+      );
+    }
+  },
   // req.setHeaders(headers) -> loop calling pm.request.headers.upsert() for each header
   {
     pattern: 'req.setHeaders',
diff --git a/packages/bruno-converters/tests/bruno/bruno-to-postman-translations/request.test.js b/packages/bruno-converters/tests/bruno/bruno-to-postman-translations/request.test.js
index 1fe2df865..29f4ec83d 100644
--- a/packages/bruno-converters/tests/bruno/bruno-to-postman-translations/request.test.js
+++ b/packages/bruno-converters/tests/bruno/bruno-to-postman-translations/request.test.js
@@ -73,10 +73,10 @@ describe('Bruno to Postman Request Translation', () => {
     expect(translatedCode).toBe('const contentType = pm.request.headers.get("Content-Type");');
   });
 
-  it('should translate req.setHeader() to pm.request.headers.set()', () => {
+  it('should translate req.setHeader() to pm.request.headers.upsert() with object arg', () => {
     const code = 'req.setHeader("Authorization", "Bearer token123");';
     const translatedCode = translateBruToPostman(code);
-    expect(translatedCode).toBe('pm.request.headers.set("Authorization", "Bearer token123");');
+    expect(translatedCode).toContain('pm.request.headers.upsert({\n  key: "Authorization",\n  value: "Bearer token123"\n})');
   });
 
   it('should translate req.deleteHeader() to pm.request.headers.remove()', () => {