diff --git a/lhcb/gen-sim/lhcb-gen-sim.spec b/lhcb/gen-sim/lhcb-gen-sim.spec
index 59c7953195e1e26ed3dc563c97aee804bb7b3368..d9fd652ef9999217fe91decbb3657609ac1935c3 100644
--- a/lhcb/gen-sim/lhcb-gen-sim.spec
+++ b/lhcb/gen-sim/lhcb-gen-sim.spec
@@ -3,5 +3,5 @@ HEPWL_BMKOPTS="-c 4 -e 5" # -c replaces -n as of v0.7
 HEPWL_BMKDIR=lhcb-gen-sim
 HEPWL_BMKDESCRIPTION="LHCb GEN-SIM benchmark"
 HEPWL_DOCKERIMAGENAME=lhcb-gen-sim-bmk
-HEPWL_DOCKERIMAGETAG=v0.12 # versions >= v0.6 use common bmk driver, >= v0.9 use separate GEN/SIM scores
+HEPWL_DOCKERIMAGETAG=v0.13 # versions >= v0.6 use common bmk driver, >= v0.9 use separate GEN/SIM scores
 HEPWL_CVMFSREPOS=lhcb.cern.ch