Update recommended verilator version to 4.006 (#1032)

1 files changed, 2 insertions, 2 deletions

diff --git a/README.md b/README.md
index 02672ab5..762ae49d 100644
--- a/README.md
+++ b/README.md
@@ -46,7 +46,7 @@ This will walk you through installing Chisel and its dependencies:
     sudo apt-get install sbt
     ```
 1. Install Verilator.
-    We currently recommend Verilator version 3.922.
+    We currently recommend Verilator version 4.006.
     Follow these instructions to compile it from source.
 
     1. Install prerequisites (if not installed already):
@@ -62,7 +62,7 @@ This will walk you through installing Chisel and its dependencies:
     3. In the Verilator repository directory, check out a known good version:
         ```
         git pull
-        git checkout verilator_3_922
+        git checkout verilator_4_006
         ```
 
     4. In the Verilator repository directory, build and install: