diff --git a/atlas/gen/atlas-gen.spec b/atlas/gen/atlas-gen.spec
index bdc79f7940cefb5daafcc04431ea952f344635d2..3b1a364244fbdf1e30cfa711f3e27727d4c2c07c 100644
--- a/atlas/gen/atlas-gen.spec
+++ b/atlas/gen/atlas-gen.spec
@@ -1,8 +1,8 @@
 HEPWL_BMKEXE=atlas-gen-bmk.sh
-HEPWL_BMKOPTS="-e 4" # -c replaces -n as of v0.12
+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