diff --git a/CHANGELOG.md b/CHANGELOG.md
index d6b01f8aa..df22459ef 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 Magento Functional Testing Framework Changelog
 ================================================
+2.3.9
+-----
+### Fixes
+* Logic for parallel execution were updated to split default tests and suites from running in one group.
 
 2.3.8
 -----
diff --git a/composer.json b/composer.json
index c59fd3279..b0935716c 100755
--- a/composer.json
+++ b/composer.json
@@ -2,7 +2,7 @@
     "name": "magento/magento2-functional-testing-framework",
     "description": "Magento2 Functional Testing Framework",
     "type": "library",
-    "version": "2.3.8",
+    "version": "2.3.9",
     "license": "AGPL-3.0",
     "keywords": ["magento", "automation", "functional", "testing"],
     "config": {
diff --git a/composer.lock b/composer.lock
index ae923f943..69ec89337 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "d733d1bb277b1397e891340fed0877a2",
+    "content-hash": "852839b6476b1617ca7e2ed5ae46c12d",
     "packages": [
         {
             "name": "allure-framework/allure-codeception",
diff --git a/dev/tests/unit/Magento/FunctionalTestFramework/Util/Sorter/ParallelGroupSorterTest.php b/dev/tests/unit/Magento/FunctionalTestFramework/Util/Sorter/ParallelGroupSorterTest.php
index c4a04d361..997bf0c3e 100644
--- a/dev/tests/unit/Magento/FunctionalTestFramework/Util/Sorter/ParallelGroupSorterTest.php
+++ b/dev/tests/unit/Magento/FunctionalTestFramework/Util/Sorter/ParallelGroupSorterTest.php
@@ -98,13 +98,14 @@ public function testSortWithSuites()
         $actualResult = $testSorter->getTestsGroupedBySize($sampleSuiteArray, $sampleTestArray, 500);
 
         // verify the resulting groups
-        $this->assertCount(4, $actualResult);
+        $this->assertCount(5, $actualResult);
 
         $expectedResults =  [
-            1 => ['test3'],
-            2 => ['test2','test5', 'test4'],
-            3 => ['mockSuite1_0', 'test1'],
-            4 => ['mockSuite1_1']
+            1 => ['mockSuite1_0'],
+            2 => ['mockSuite1_1'],
+            3 => ['test3'],
+            4 => ['test2','test5', 'test4'],
+            5 => ['test1'],
         ];
 
         foreach ($actualResult as $groupNum => $group) {
diff --git a/src/Magento/FunctionalTestingFramework/Util/Sorter/ParallelGroupSorter.php b/src/Magento/FunctionalTestingFramework/Util/Sorter/ParallelGroupSorter.php
index 8654d64a7..8f4cac8a2 100644
--- a/src/Magento/FunctionalTestingFramework/Util/Sorter/ParallelGroupSorter.php
+++ b/src/Magento/FunctionalTestingFramework/Util/Sorter/ParallelGroupSorter.php
@@ -47,12 +47,18 @@ public function getTestsGroupedBySize($suiteConfiguration, $testNameToSize, $tim
         $testGroups = [];
         $splitSuiteNamesToTests = $this->createGroupsWithinSuites($suiteConfiguration, $time);
         $splitSuiteNamesToSize = $this->getSuiteToSize($splitSuiteNamesToTests);
-        $entriesForGeneration = array_merge($testNameToSize, $splitSuiteNamesToSize);
-        arsort($entriesForGeneration);
+        arsort($testNameToSize);
+        arsort($splitSuiteNamesToSize);
 
-        $testNameToSizeForUse = $entriesForGeneration;
+        $testNameToSizeForUse = $testNameToSize;
         $nodeNumber = 1;
-        foreach ($entriesForGeneration as $testName => $testSize) {
+
+        foreach ($splitSuiteNamesToSize as $testName => $testSize) {
+            $testGroups[$nodeNumber] = [$testName => $testSize];
+            $nodeNumber++;
+        }
+
+        foreach ($testNameToSize as $testName => $testSize) {
             if (!array_key_exists($testName, $testNameToSizeForUse)) {
                 // skip tests which have already been added to a group
                 continue;