diff --git a/book/src/testnet-participation.md b/book/src/testnet-participation.md
index 2e2e247768..d72d8320cd 100644
--- a/book/src/testnet-participation.md
+++ b/book/src/testnet-participation.md
@@ -74,8 +74,8 @@ The `solana-install` tool can be used to easily install and upgrade the cluster
 software on Linux x86_64 and mac OS systems.
 
 ```bash
-$ export SOLANA_RELEASE=v0.16.0  # skip this line to install the latest release
-$ curl -sSf https://raw.githubusercontent.com/solana-labs/solana/v0.16.0/install/solana-install-init.sh | sh -s
+$ export SOLANA_RELEASE=v0.16.4  # skip this line to install the latest release
+$ curl -sSf https://raw.githubusercontent.com/solana-labs/solana/v0.16.4/install/solana-install-init.sh | sh -s
 ```
 
 Alternatively build the `solana-install` program from source and run the