diff --git a/tools/main.cpp b/tools/main.cpp
index ae85c1b..f73bcad 100644
--- a/tools/main.cpp
+++ b/tools/main.cpp
@@ -53,7 +53,8 @@
     std::fprintf(
         stderr,
         "Usage: %s --command <command> --interface <interface> --image "
-        "<image file> --sig <signature file> --type <layout>\n",
+        "<image file> --sig <signature file> --type <layout> "
+        "[--ignore-update]\n",
         program);
 
     std::fprintf(stderr, "interfaces: ");
@@ -86,6 +87,7 @@
     long length = 0;
     std::uint32_t hostAddress = 0;
     std::uint32_t hostLength = 0;
+    bool ignoreUpdate = false;
 
     while (1)
     {
@@ -98,12 +100,13 @@
             {"address", required_argument, 0, 'a'},
             {"length", required_argument, 0, 'l'},
             {"type", required_argument, 0, 't'},
+            {"ignore-update", no_argument, 0, 'u'},
             {0, 0, 0, 0}
         };
         // clang-format on
 
         int option_index = 0;
-        int c = getopt_long(argc, argv, "c:i:m:s:a:l:t:", long_options,
+        int c = getopt_long(argc, argv, "c:i:m:s:a:l:t:u", long_options,
                             &option_index);
         if (c == -1)
         {
@@ -168,6 +171,9 @@
             case 't':
                 type = std::string{optarg};
                 break;
+            case 'u':
+                ignoreUpdate = true;
+                break;
             default:
                 usage(argv[0]);
                 exit(EXIT_FAILURE);
@@ -232,7 +238,8 @@
         try
         {
             host_tool::UpdateHandler updater(&blob, handler.get());
-            host_tool::updaterMain(&updater, imagePath, signaturePath, type);
+            host_tool::updaterMain(&updater, imagePath, signaturePath, type,
+                                   ignoreUpdate);
         }
         catch (const host_tool::ToolException& e)
         {