diff --git a/quic/core/http/quic_spdy_client_session_test.cc b/quic/core/http/quic_spdy_client_session_test.cc
index 55ff354..1b3be0b 100644
--- a/quic/core/http/quic_spdy_client_session_test.cc
+++ b/quic/core/http/quic_spdy_client_session_test.cc
@@ -973,7 +973,8 @@
                  ->application_state);
 }
 
-TEST_P(QuicSpdyClientSessionTest, IetfZeroRttSetup) {
+// TODO(b/158240541) re-enable this test after fixing the bug.
+TEST_P(QuicSpdyClientSessionTest, DISABLED_IetfZeroRttSetup) {
   // This feature is HTTP/3 only
   if (!VersionUsesHttp3(session_->transport_version())) {
     return;
diff --git a/quic/core/tls_client_handshaker_test.cc b/quic/core/tls_client_handshaker_test.cc
index a59e6b8..81855ca 100644
--- a/quic/core/tls_client_handshaker_test.cc
+++ b/quic/core/tls_client_handshaker_test.cc
@@ -323,7 +323,8 @@
   EXPECT_TRUE(stream()->one_rtt_keys_available());
 }
 
-TEST_P(TlsClientHandshakerTest, Resumption) {
+// TODO(b/158240541) re-enable this test after fixing the bug.
+TEST_P(TlsClientHandshakerTest, DISABLED_Resumption) {
   // Finish establishing the first connection:
   CompleteCryptoHandshake();