diff --git a/test/core/end2end/fuzzers/api_fuzzer.cc b/test/core/end2end/fuzzers/api_fuzzer.cc
index 6a63d511046..b22a6d46905 100644
--- a/test/core/end2end/fuzzers/api_fuzzer.cc
+++ b/test/core/end2end/fuzzers/api_fuzzer.cc
@@ -227,7 +227,7 @@ static void my_cancel_ares_request(grpc_ares_request* request) {
 namespace grpc_core {
 namespace testing {
 
-class ApiFuzzer : public BasicFuzzer {
+class ApiFuzzer final : public BasicFuzzer {
  public:
   explicit ApiFuzzer(const fuzzing_event_engine::Actions& actions);
   ~ApiFuzzer();