diff --git a/Configuration/PyReleaseValidation/python/relval_2026.py b/Configuration/PyReleaseValidation/python/relval_2026.py
index 12cc3e6860394..cc9bcce795dfb 100644
--- a/Configuration/PyReleaseValidation/python/relval_2026.py
+++ b/Configuration/PyReleaseValidation/python/relval_2026.py
@@ -37,6 +37,7 @@
 numWFIB.extend([39434.5,39434.9,39434.501,39434.502]) #2026D88 pixelTrackingOnly, vector hits, Patatrack local reconstruction on CPU, Patatrack local reconstruction on GPU
 numWFIB.extend([39634.99,39634.999]) #2026D88 premixing combined stage1+stage2 (ttbar+PU200, ttbar+PU50 for PR test)
 numWFIB.extend([39434.21,39634.21,39634.9921]) #2026D88 prodlike, prodlike PU, prodlike premix stage1+stage2
+numWFIB.extend([39634.114]) #2026D88 PU, with 10% OT ineffiency
 numWFIB.extend([39834.0]) #2026D89
 numWFIB.extend([40234.0]) #2026D90
 numWFIB.extend([40634.0]) #2026D91