diff --git a/.github/workflows/scala.yml b/.github/workflows/scala.yml
index 859c137..9d2d2aa 100644
--- a/.github/workflows/scala.yml
+++ b/.github/workflows/scala.yml
@@ -40,7 +40,7 @@ jobs:
       with:
         path: |
           ~/tools
-        key: ${{ runner.os }}-tools_v3
+        key: ${{ runner.os }}-tools_v4
 
     - name: Setup env
       run: echo "$HOME/tools/bin" >> $GITHUB_PATH
diff --git a/tools.sh b/tools.sh
index ebe0592..7ee6a59 100644
--- a/tools.sh
+++ b/tools.sh
@@ -6,7 +6,7 @@ install_verilator(){
   unset VERILATOR_ROOT  # For bash
   cd verilator
   git pull        # Make sure we're up-to-date
-  git checkout v4.040
+  git checkout v4.216
   autoconf        # Create ./configure script
   ./configure --prefix ~/tools
   make -j$(nproc)