diff --git a/Configuration/PyReleaseValidation/python/relval_steps.py b/Configuration/PyReleaseValidation/python/relval_steps.py
index 93e8846f382a3..320ef342fb614 100644
--- a/Configuration/PyReleaseValidation/python/relval_steps.py
+++ b/Configuration/PyReleaseValidation/python/relval_steps.py
@@ -3623,8 +3623,8 @@ def gen2021HiMix(fragment,howMuch):
 defaultDataSets['2017Design']='CMSSW_12_0_0_pre4-113X_mc2017_design_v5-v'
 defaultDataSets['2018']='CMSSW_12_0_0_pre4-113X_upgrade2018_realistic_v5-v'
 defaultDataSets['2018Design']='CMSSW_12_0_0_pre4-113X_upgrade2018_design_v5-v'
-defaultDataSets['2021']='CMSSW_12_0_0_pre4-120X_mcRun3_2021_realistic_v2-v'
-defaultDataSets['2021Design']='CMSSW_12_0_0_pre4-120X_mcRun3_2021_design_v2-v'
+defaultDataSets['2021']='CMSSW_12_4_9_patch1-124X_mcRun3_2022_realistic_v10_BS2022-v'
+defaultDataSets['2021Design']='CMSSW_12_4_9_patch1-124X_mcRun3_2022_design_v7_BS2022-v'
 defaultDataSets['2023']='CMSSW_12_0_0_pre4-120X_mcRun3_2023_realistic_v2-v'
 defaultDataSets['2024']='CMSSW_12_0_0_pre4-120X_mcRun3_2024_realistic_v2-v'
 defaultDataSets['2026D49']='CMSSW_12_0_0_pre4-113X_mcRun4_realistic_v7_2026D49noPU-v'