diff --git a/README.md b/README.md
index c8ea163..b270a77 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,8 @@
 
 A netcat-like tool for analysing or mocking HTTP requests.  My first experiment with Go.
 
+Latest version: 2.4
+
 ## Usage
 
 ```
@@ -128,7 +130,7 @@
 
 ### Complex Bodies
 
-For mocking real web services it can be annoying to include a large body directly in the route definition.  A better option is to use shell command substitution to load the body from a file:
+For mocking services with large/complex bodies, you can use shell command substitution to load the body for a route from a file:
 
 File `cust.json`:
 ```
@@ -176,16 +178,23 @@
 
 -t, --target   The URL for the target web server that the proxy forwards
                requests to.
+
+-f, --filter   Only show bodies that match the given Content-Type.
 ```
 
-### Example
+### Examples
 
 ```
 httpcat proxy --port 8090 --target http://localhost:8080
+
+# only show JSON bodies
+httpcat proxy --filter "application/json" --port 8090 --target http://localhost:8080
 ```
 
 Any requests sent to port 8090 will be forwarded to `http://localhost:8080` and all requests and responses will be displayed.  Any redirect responses will be rewritten to use the specified port.
 
+Using the `filter` option will cause the bodies that don't match the given `Content-Type` to be suppressed, but the headers will still be shown.
+
 ## Building
 
 ```
@@ -199,7 +208,7 @@
 go build -ldflags "-s -w" -o ../httpcat
 ```
 
-See the `link` docs for information on flags:
+See the `link` docs for information on `ldflags`:
 
 https://pkg.go.dev/cmd/link
 
@@ -214,7 +223,7 @@
 Windows
 
 ```
-GOOS=windows GOARCH=amd64 go build -o ../httpcat-win64
+GOOS=windows GOARCH=amd64 go build -o ../httpcat-win64.exe
 ```
 
 Intel Mac
@@ -231,7 +240,7 @@
 
 ## License
 
-Zero-Clause BSD License
+Zero-Clause BSD License: https://opensource.org/license/0bsd/
 
 Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted.