diff --git dependency_support/verilator/verilator.BUILD dependency_support/verilator/verilator.BUILD
index 00fd758..5c93a65 100644
--- dependency_support/verilator/verilator.BUILD
+++ dependency_support/verilator/verilator.BUILD
@@ -48,7 +48,8 @@ genrule(
         "V3Ast__gen_impl.h",
         "V3Ast__gen_report.txt",
         "V3Ast__gen_types.h",
-        "V3Ast__gen_visitor.h",
+        "V3Ast__gen_visitor_decls.h",
+        "V3Ast__gen_visitor_defns.h",
         "V3Ast__gen_yystype.h",
         "V3AstNodes__gen_macros.h",
     ],
@@ -58,7 +59,8 @@ genrule(
     cp V3Ast__gen_impl.h $(@D)
     cp V3Ast__gen_report.txt $(@D)
     cp V3Ast__gen_types.h $(@D)
-    cp V3Ast__gen_visitor.h $(@D)
+    cp V3Ast__gen_visitor_decls.h $(@D)
+    cp V3Ast__gen_visitor_defns.h $(@D)
     cp V3Ast__gen_yystype.h $(@D)
     cp V3AstNodes__gen_macros.h $(@D)
     """,
@@ -153,7 +155,8 @@ cc_library(
         ":V3Ast__gen_classes.h",
         ":V3Ast__gen_impl.h",
         ":V3Ast__gen_types.h",
-        ":V3Ast__gen_visitor.h",
+        ":V3Ast__gen_visitor_decls.h",
+        ":V3Ast__gen_visitor_defns.h",
         ":V3AstNodes__gen_macros.h",
         ":V3Ast__gen_yystype.h",
         ":V3Const__gen.cpp",
diff --git dependency_support/verilator/verilator.bzl dependency_support/verilator/verilator.bzl
index 76893b7..1dd2d5e 100644
--- dependency_support/verilator/verilator.bzl
+++ dependency_support/verilator/verilator.bzl
@@ -56,11 +56,11 @@ verilator_repository = repository_rule(
         ),
         "version": attr.string(
             doc = "The version of verilator to use.",
-            default = "4.224",
+            default = "4.226",
         ),
         "sha256": attr.string(
             doc = "The sha256 hash for this version of verilator",
-            default = "010ff2b5c76d4dbc2ed4a3278a5599ba35c8ed4c05690e57296d6b281591367b",
+            default = "70bc941d86e4810253d51aa94898b0802d916ab76296a398f8ceb8798122c9be",
         ),
     },
 )