diff --git a/ethereum/evmtool/README.md b/ethereum/evmtool/README.md
index 419203d332e..fb774e13533 100644
--- a/ethereum/evmtool/README.md
+++ b/ethereum/evmtool/README.md
@@ -25,7 +25,7 @@ execution-spec-tests:
         https://github.com/ethereum/execution-spec-tests/issues/274)):
 
     ```zsh
-    brew install autoconf automake libconf
+    brew install autoconf automake libtool
     ```
 
 2. Zsh requires braces to be escaped in the command line, so the