diff --git a/dv/uvm/core_ibex/Makefile b/dv/uvm/core_ibex/Makefile
index c4899102..6927343f 100644
--- a/dv/uvm/core_ibex/Makefile
+++ b/dv/uvm/core_ibex/Makefile
@@ -78,7 +78,10 @@ ifeq (${SIMULATOR},vcs)
 else ifeq (${SIMULATOR},ius)
 	COMPILE_OPTS += -defparam core_ibex_tb_top.dut.PMPNumRegions=${PMP_REGIONS}
 	COMPILE_OPTS += -defparam core_ibex_tb_top.dut.PMPGranularity=${PMP_GRANULARITY}
-# TODO(udinator) - support dsim and riviera
+else ifeq (&{SIMULATOR},riviera)
+	SIM_OPTS +=-g/core_ibex_tb_top/dut/PMPNumRegions=${PMP_REGIONS}
+	SIM_OPTS +=-g/core_ibex_tb_top/dut/PMPGranularity=${PMP_GRANULARITY}
+# TODO(udinator) - support dsim
 endif
 
 SHELL=/bin/bash
diff --git a/dv/uvm/core_ibex/yaml/rtl_simulation.yaml b/dv/uvm/core_ibex/yaml/rtl_simulation.yaml
index cc21bd2c..f582bd55 100644
--- a/dv/uvm/core_ibex/yaml/rtl_simulation.yaml
+++ b/dv/uvm/core_ibex/yaml/rtl_simulation.yaml
@@ -106,7 +106,7 @@
 
   sim:
     cmd: >
-      vsim -c <sim_opts> <cov_opts> -lib <out>/work +access +r+w -l <out>/logfile.log -do "run -all; endsim; quit -force" +ibex_tracer_file_base="trace_core"
+      vsim -c <sim_opts> <cov_opts> -sv_seed <seed> -lib <out>/work +access +r+w -l <out>/logfile.log -do "run -all; endsim; quit -force" +ibex_tracer_file_base="trace_core"
     cov_opts: >
       -acdb_file <out>/cov.acdb