diff --git a/source/common/runtime/runtime_features.cc b/source/common/runtime/runtime_features.cc
index 79b6470b49fb..f709e7a24984 100644
--- a/source/common/runtime/runtime_features.cc
+++ b/source/common/runtime/runtime_features.cc
@@ -129,8 +129,6 @@ FALSE_RUNTIME_GUARD(envoy_reloadable_features_always_use_v6);
 FALSE_RUNTIME_GUARD(envoy_reloadable_features_refresh_rtt_after_request);
 // TODO(danzh) false deprecate it once QUICHE has its own enable/disable flag.
 FALSE_RUNTIME_GUARD(envoy_reloadable_features_quic_reject_all);
-// TODO(steveWang) flip this to true after this is verified in prod.
-FALSE_RUNTIME_GUARD(envoy_reloadable_features_quiche_use_mem_slice_releasor_api);
 // TODO(suniltheta): Once the newly added http async technique is stabilized move it under
 // RUNTIME_GUARD so that this option becomes default enabled. Once this option proves effective
 // remove the feature flag and remove code path that relies on old technique to fetch credentials
diff --git a/test/common/quic/BUILD b/test/common/quic/BUILD
index 13cb63c6c5ee..6c0fff13ff16 100644
--- a/test/common/quic/BUILD
+++ b/test/common/quic/BUILD
@@ -128,7 +128,6 @@ envoy_cc_test(
         "//test/mocks/http:http_mocks",
         "//test/mocks/http:stream_decoder_mock",
         "//test/mocks/network:network_mocks",
-        "//test/test_common:test_runtime_lib",
         "//test/test_common:utility_lib",
         "@com_github_google_quiche//:quic_core_http_spdy_session_lib",
         "@com_github_google_quiche//:quic_test_tools_qpack_qpack_test_utils_lib",
@@ -150,7 +149,6 @@ envoy_cc_test(
         "//test/mocks/http:http_mocks",
         "//test/mocks/http:stream_decoder_mock",
         "//test/mocks/network:network_mocks",
-        "//test/test_common:test_runtime_lib",
         "//test/test_common:utility_lib",
         "@com_github_google_quiche//:quic_core_http_spdy_session_lib",
         "@com_github_google_quiche//:quic_test_tools_qpack_qpack_test_utils_lib",
diff --git a/test/common/quic/envoy_quic_client_stream_test.cc b/test/common/quic/envoy_quic_client_stream_test.cc
index 7daf1fe0db1c..b579c6962130 100644
--- a/test/common/quic/envoy_quic_client_stream_test.cc
+++ b/test/common/quic/envoy_quic_client_stream_test.cc
@@ -8,7 +8,6 @@
 #include "test/mocks/http/mocks.h"
 #include "test/mocks/http/stream_decoder.h"
 #include "test/mocks/network/mocks.h"
-#include "test/test_common/test_runtime.h"
 #include "test/test_common/utility.h"
 
 #include "gmock/gmock.h"
@@ -249,10 +248,6 @@ TEST_F(EnvoyQuicClientStreamTest, PostRequestAndResponse) {
 }
 
 TEST_F(EnvoyQuicClientStreamTest, PostRequestAndResponseWithMemSliceReleasor) {
-  TestScopedRuntime scoped_runtime;
-  scoped_runtime.mergeValues(
-      {{"envoy.reloadable_features.quiche_use_mem_slice_releasor_api", "true"}});
-
   EXPECT_EQ(absl::nullopt, quic_stream_->http1StreamEncoderOptions());
   const auto result = quic_stream_->encodeHeaders(request_headers_, false);
   EXPECT_TRUE(result.ok());
diff --git a/test/common/quic/envoy_quic_server_stream_test.cc b/test/common/quic/envoy_quic_server_stream_test.cc
index 5f976e56ba57..51f1e01045e9 100644
--- a/test/common/quic/envoy_quic_server_stream_test.cc
+++ b/test/common/quic/envoy_quic_server_stream_test.cc
@@ -15,7 +15,6 @@
 #include "test/mocks/http/mocks.h"
 #include "test/mocks/http/stream_decoder.h"
 #include "test/mocks/network/mocks.h"
-#include "test/test_common/test_runtime.h"
 #include "test/test_common/test_time.h"
 #include "test/test_common/utility.h"
 
@@ -287,10 +286,6 @@ TEST_F(EnvoyQuicServerStreamTest, PostRequestAndResponse) {
 }
 
 TEST_F(EnvoyQuicServerStreamTest, PostRequestAndResponseWithMemSliceReleasor) {
-  TestScopedRuntime scoped_runtime;
-  scoped_runtime.mergeValues(
-      {{"envoy.reloadable_features.quiche_use_mem_slice_releasor_api", "true"}});
-
   EXPECT_EQ(absl::nullopt, quic_stream_->http1StreamEncoderOptions());
   receiveRequest(request_body_, true, request_body_.size() * 2);
   quic_stream_->encodeHeaders(response_headers_, /*end_stream=*/false);