diff --git a/README.md b/README.md
index 8eab9e5..50c8fa5 100644
--- a/README.md
+++ b/README.md
@@ -168,7 +168,7 @@ codex plugin marketplace add GoogleCloudPlatform/data-agent-kit
 **2. Install the plugin:**
 
 ```bash
-codex plugin install spanner@data-agent-kit
+codex plugin add spanner@data-agent-kit
 ```
 
 **3. Set env vars:**