diff --git a/test/systemtest/config.py b/test/systemtest/config.py
index 0c14685..909d3cd 100644
--- a/test/systemtest/config.py
+++ b/test/systemtest/config.py
@@ -25,6 +25,17 @@
         "name": "crt_test",
     },
     {
+        "name": "dif_otbn_sanitytest_rtl",
+        "binary_name": "dif_otbn_sanitytest",
+        "verilator_extra_args": ['+OTBN_USE_MODEL=0'],
+    },
+    {
+        "name": "dif_otbn_sanitytest_model",
+        "binary_name": "dif_otbn_sanitytest",
+        "verilator_extra_args": ['+OTBN_USE_MODEL=1'],
+        "targets": ["sim_verilator"],
+    },
+    {
         "name": "dif_plic_sanitytest",
     },
     {