diff --git a/src/tools/x/README.md b/src/tools/x/README.md
index 3b3cf2847c2..80bf02e8a0e 100644
--- a/src/tools/x/README.md
+++ b/src/tools/x/README.md
@@ -1,3 +1,10 @@
 # x
 
 `x` invokes `x.py` from any subdirectory.
+
+To install, run the following commands:
+
+```
+$ cd rust/src/tools/x/
+$ cargo install --path .
+```