diff --git a/README.md b/README.md
index eec2dd0..1902977 100644
--- a/README.md
+++ b/README.md
@@ -152,7 +152,7 @@ unsetenv VERILATOR_ROOT  # For csh; ignore error if on bash
 unset VERILATOR_ROOT  # For bash
 cd verilator
 git pull        # Make sure we're up-to-date
-git checkout v3.916
+git checkout v4.040
 autoconf        # Create ./configure script
 ./configure
 make