diff --git a/docs/http2.md b/docs/http2.md
index e138c605..a865b55a 100644
--- a/docs/http2.md
+++ b/docs/http2.md
@@ -28,7 +28,7 @@ trying out our HTTP/2 support. You can do so by first making sure to install
 the optional HTTP/2 dependencies...
 
 ```shell
-$ pip install httpx['http2']
+$ pip install 'httpx[http2]'
 ```
 
 And then instantiating a client with HTTP/2 support enabled: