diff --git a/tools/replay/README.md b/tools/replay/README.md
index 91e89176a2..bf7280ae80 100644
--- a/tools/replay/README.md
+++ b/tools/replay/README.md
@@ -34,10 +34,21 @@ Options:
   -h, --help             Displays this help.
   -a, --allow <allow>    whitelist of services to send
   -b, --block <block>    blacklist of services to send
+  -c, --cache <n>        cache <n> segments in memory. default is 5
   -s, --start <seconds>  start from <seconds>
+  -x <speed>             playback <speed>. between 0.2 - 3
   --demo                 use a demo route instead of providing your own
+  --data_dir <data_dir>  local directory with routes
+  --prefix <prefix>      set OPENPILOT_PREFIX
   --dcam                 load driver camera
   --ecam                 load wide road camera
+  --no-loop              stop at the end of the route
+  --no-cache             turn off local cache
+  --qcam                 load qcamera
+  --no-hw-decoder        disable HW video decoding
+  --no-vipc              do not output video
+  --all                  do output all messages including uiDebug, userFlag.
+                         this may causes issues when used along with UI
 
 Arguments:
   route                  the drive to replay. find your drives at