diff --git a/.travis.yml b/.travis.yml
index f03fa6bd5..438281685 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -80,22 +80,6 @@ matrix:
         - go get github.com/bazelbuild/buildtools/buildifier
         - ./ci/travis/bazel-format.sh
 
-    - os: linux
-      env: SANITIZER=1 CC=clang PYTHON=3.5 PYTHONWARNINGS=ignore
-
-      install:
-        - eval `python $TRAVIS_BUILD_DIR/ci/travis/determine_tests_to_run.py`
-        - if [ $RAY_CI_PYTHON_AFFECTED != "1" ]; then exit; fi
-
-        - ./ci/suppress_output ./ci/travis/install-bazel.sh
-        - ./ci/suppress_output ./ci/travis/install-dependencies.sh
-        - export PATH="$HOME/miniconda/bin:$PATH"
-        - ./ci/suppress_output ./ci/travis/install-ray.sh
-
-      script:
-        # Run core worker tests with thread sanitizer
-        - RAY_BAZEL_CONFIG="--config=tsan" TSAN_OPTIONS="report_atomic_races=0" ./ci/suppress_output bash src/ray/test/run_core_worker_tests.sh
-
     # Build Linux wheels.
     - os: linux
       env: LINUX_WHEELS=1 PYTHONWARNINGS=ignore RAY_INSTALL_JAVA=1