diff --git a/comparisons/matrix_RE.txt b/comparisons/matrix_RE.txt
index aa9af90b7872..570644bfae10 100644
--- a/comparisons/matrix_RE.txt
+++ b/comparisons/matrix_RE.txt
@@ -320,6 +320,7 @@ ProdTTbar14TeV2021miniAODwf11634p21 11634.21_TTbar_14TeV+*2021*ProdLike*/step4.r
 TTbar14TeV2021wf11634p7 11634.7_TTbar_14TeV+*2021*/step3.root RECO
 TTbar14TeV2021pixelCPUwf11634p501 11634.501_TTbar_14TeV+*2021*CPU*/step3.root RECO
 TTbar14TeV2021pixelGPUwf11634p502 11634.502_TTbar_14TeV+*2021*GPU*/step3.root RECO
+TTbar14TeV2021DD4wf11634p911 11634.911_TTbar_14TeV+*2021*DD4*/step3.root RECO
 ZMM13TeV2021DD4wf11642p911 11642.911_ZMM_13+*2021*DD4*/step3.root RECO
 TTbar14TeVPU2021wf11834p0 11834.0_TTbar_14TeV+*2021PU*/step3.root RECO
 TTbar14TeVPU2021nanoEDMwf11834p0 11834.0_TTbar_14TeV+*2021PU*/step5.root NANO