diff --git a/test/core/end2end/BUILD b/test/core/end2end/BUILD
index 8a3de5596728a..a1bd6d5917d65 100644
--- a/test/core/end2end/BUILD
+++ b/test/core/end2end/BUILD
@@ -303,7 +303,7 @@ grpc_core_end2end_test(name = "retry")
 
 grpc_core_end2end_test(name = "retry_cancel_after_first_attempt_starts")
 
-grpc_core_end2end_test(name = "retry_cancel_during_delay")
+grpc_core_end2end_test(name = "retry_cancel_during_delay", shard_count = 10)
 
 grpc_core_end2end_test(name = "retry_cancel_with_multiple_send_batches")
 
diff --git a/test/core/end2end/end2end_test_suites.cc b/test/core/end2end/end2end_test_suites.cc
index 7b2547e12a221..124f1498ec1da 100644
--- a/test/core/end2end/end2end_test_suites.cc
+++ b/test/core/end2end/end2end_test_suites.cc
@@ -414,6 +414,8 @@ class SslProxyFixture : public CoreTestFixture {
     grpc_server* s = grpc_server_create(server_args, nullptr);
     std::string server_cert = testing::GetFileContents(SERVER_CERT_PATH);
     std::string server_key = testing::GetFileContents(SERVER_KEY_PATH);
+    LOG(INFO) << GRPC_DUMP_ARGS(SERVER_CERT_PATH, SERVER_KEY_PATH, server_cert,
+                                server_key);
     grpc_ssl_pem_key_cert_pair pem_key_cert_pair = {server_key.c_str(),
                                                     server_cert.c_str()};
     grpc_server_credentials* ssl_creds = grpc_ssl_server_credentials_create(
@@ -766,8 +768,6 @@ std::vector<CoreTestConfiguration> DefaultConfigs() {
           [](const ChannelArgs& client_args, const ChannelArgs&) {
             return std::make_unique<HttpProxyFilter>(client_args);
           }},
-#if 0
-          // TODO(ctiller): why is this not working??
       CoreTestConfiguration{
           "Chttp2SslProxy",
           FEATURE_MASK_SUPPORTS_CLIENT_CHANNEL | FEATURE_MASK_IS_SECURE |
@@ -778,7 +778,6 @@ std::vector<CoreTestConfiguration> DefaultConfigs() {
           [](const ChannelArgs& client_args, const ChannelArgs& server_args) {
             return std::make_unique<SslProxyFixture>(client_args, server_args);
           }},
-#endif
       CoreTestConfiguration{
           "Chttp2InsecureCredentials",
           FEATURE_MASK_SUPPORTS_CLIENT_CHANNEL |