diff --git a/hw/vendor/lowrisc_ibex.vendor.hjson b/hw/vendor/lowrisc_ibex.vendor.hjson
index dea1b6f..941c669 100644
--- a/hw/vendor/lowrisc_ibex.vendor.hjson
+++ b/hw/vendor/lowrisc_ibex.vendor.hjson
@@ -16,8 +16,11 @@
     // fusesoc picks up isn't deterministic so two copies can be problematic
     'shared',
     // vendor/lowrisc_ip contains things from the OpenTitan repository, leaving
-    // it in can cause conflicts
+    // it in can cause conflicts. We also remove the vendor configuration so it
+    // cannot accidentally be brought back by util/vendor.py.
     'vendor/lowrisc_ip',
+    'vendor/lowrisc_ip.vendor.hjson',
+    'vendor/lowrisc_ip.lock.hjson',
     // We shouldn't reformat upstream code
     '.clang-format',
   ]
diff --git a/hw/vendor/lowrisc_ibex/vendor/lowrisc_ip.lock.hjson b/hw/vendor/lowrisc_ibex/vendor/lowrisc_ip.lock.hjson
deleted file mode 100644
index 3d2e312..0000000
--- a/hw/vendor/lowrisc_ibex/vendor/lowrisc_ip.lock.hjson
+++ /dev/null
@@ -1,14 +0,0 @@
-// Copyright lowRISC contributors.
-// Licensed under the Apache License, Version 2.0, see LICENSE for details.
-// SPDX-License-Identifier: Apache-2.0
-
-// This file is generated by the util/vendor script. Please do not modify it
-// manually.
-
-{
-  upstream:
-  {
-    url: https://github.com/lowRISC/opentitan
-    rev: 249b4c316cd6626d13e17edd8a52ca60c004af96
-  }
-}
diff --git a/hw/vendor/lowrisc_ibex/vendor/lowrisc_ip.vendor.hjson b/hw/vendor/lowrisc_ibex/vendor/lowrisc_ip.vendor.hjson
deleted file mode 100644
index 3e3710d..0000000
--- a/hw/vendor/lowrisc_ibex/vendor/lowrisc_ip.vendor.hjson
+++ /dev/null
@@ -1,29 +0,0 @@
-// Copyright lowRISC contributors.
-// Licensed under the Apache License, Version 2.0, see LICENSE for details.
-// SPDX-License-Identifier: Apache-2.0
-{
-    name: "lowrisc_ip",
-    target_dir: "lowrisc_ip",
-
-    upstream: {
-        url: "https://github.com/lowRISC/opentitan"
-        rev: "master"
-    }
-
-    mapping: [
-        {from: "hw/dv/sv/common_ifs", to: "common_ifs"},
-        {from: "hw/dv/sv/csr_utils",  to: "csr_utils"},
-        {from: "hw/dv/sv/dv_lib",     to: "dv_lib"},
-        {from: "hw/dv/sv/dv_utils",   to: "dv_utils"},
-        {from: "hw/dv/verilator",     to: "dv_verilator"},
-
-        {from: "hw/ip/prim",          to: "prim"},
-        {from: "hw/ip/prim_generic",  to: "prim_generic"},
-        {from: "hw/ip/prim_xilinx",   to: "prim_xilinx"},
-
-        {from: "hw/lint",             to: "lint"},
-
-        {from: "util/dvsim",          to: "dvsim"},
-        {from: "util/uvmdvgen",       to: "uvmdvgen"},
-    ]
-}