diff --git a/atlas/gen/atlas-gen.spec b/atlas/gen/atlas-gen.spec
index 91eb2aa448045673f652080d96440a0ee8e3c224..3b1a364244fbdf1e30cfa711f3e27727d4c2c07c 100644
--- a/atlas/gen/atlas-gen.spec
+++ b/atlas/gen/atlas-gen.spec
@@ -3,6 +3,6 @@ HEPWL_BMKOPTS="-e 4" # -c replaces -n as of v0.11
 HEPWL_BMKDIR=atlas-gen
 HEPWL_BMKDESCRIPTION="ATLAS Event Generation based on athena version 19.2.5.5"
 HEPWL_DOCKERIMAGENAME=atlas-gen-bmk
-HEPWL_DOCKERIMAGETAG=v1.0 # versions >= v0.11 use common bmk driver
+HEPWL_DOCKERIMAGETAG=v1.1 # versions >= v0.11 use common bmk driver
 HEPWL_CVMFSREPOS=atlas.cern.ch,atlas-condb.cern.ch,sft.cern.ch
 HEPWL_EXTEND_SFT_SPEC=./sft_spec_custom.txt
diff --git a/atlas/gen/atlas-gen/atlas-gen-bmk.sh b/atlas/gen/atlas-gen/atlas-gen-bmk.sh
index 677f3514ac1972e83e2c438ba35ae73eea0dece0..3fa444487c9ce841977fdbb041aee57a972994e2 100755
--- a/atlas/gen/atlas-gen/atlas-gen-bmk.sh
+++ b/atlas/gen/atlas-gen/atlas-gen-bmk.sh
@@ -21,7 +21,7 @@ function doOne(){
   # Configure WL copy
   joboptions=$BMKDIR/auxfiles/MC15.410501.PowhegPythia8EvtGen_A14_ttbar_hdamp258p75_nonallhad.py
   # Execute WL copy
-  Generate_tf.py --ecmEnergy="13000"  --firstEvent="47060001" --jobConfig="$joboptions" \
+  Generate_tf.py --ecmEnergy="13000"  --firstEvent="1" --jobConfig="$joboptions" \
     --maxEvents="$NEVENTS_THREAD" --outputEVNTFile="EVNT.10867034._003922.pool.root.1" --outputTXTFile="TXT.10867034._003922.tar.gz.1" \
     --randomSeed="9413" --runNumber="410501"  > out_$1.log 2>&1
   status=${?}