diff --git a/bazel/config/BUILD.bazel b/bazel/config/BUILD.bazel
index 448260de88..7af7ccb606 100644
--- a/bazel/config/BUILD.bazel
+++ b/bazel/config/BUILD.bazel
@@ -22,6 +22,13 @@ config_setting(
     },
 )
 
+config_setting(
+    name = "is_opt",
+    values = {
+        "compilation_mode": "opt",
+    },
+)
+
 config_setting(
     name = "is_debug",
     values = {
diff --git a/bazel/defs.bzl b/bazel/defs.bzl
index 77e86ef6f2..8c3e3b9d1d 100644
--- a/bazel/defs.bzl
+++ b/bazel/defs.bzl
@@ -152,6 +152,14 @@ def _default_args():
             ],
             "//conditions:default": [],
         }),
+        cxxopts = select({
+            "//third_party/v8/HEAD/google3/config:is_opt": [
+                "-fvisibility=hidden",
+                "-fvisibility-inlines-hidden",
+            ],
+            "//conditions:default": [
+            ],
+        }),
         includes = ["include"],
         linkopts = select({
             "@v8//bazel/config:is_windows": [