diff --git a/minitests/opentitan/src.yosys/runme.py b/minitests/opentitan/src.yosys/runme.py
index cf86b20..008cf3e 100755
--- a/minitests/opentitan/src.yosys/runme.py
+++ b/minitests/opentitan/src.yosys/runme.py
@@ -9,6 +9,7 @@
 os.makedirs(work_root, exist_ok=True)
 
 synth_tool = 'yosys'
+yosys_synth_options = '-iopad -family xcup'
 
 srcs = glob.glob("*.v")
 
@@ -37,7 +38,8 @@
   'tool_options' : {'vivado' : {
     'part' : os.environ['XRAY_PART'],
     'post_imp' : post_imp_file,
-    'synth' : synth_tool
+    'synth' : synth_tool,
+    'yosys_synth_options' : yosys_synth_options
     }}
 }