diff --git a/.travis.yml b/.travis.yml
index 62fb4e43d..3277df53c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -114,9 +114,9 @@ matrix:
     # Build MacOS wheels.
     - os: osx
       osx_image: xcode7
-      env: MAC_WHEELS=1 PYTHONWARNINGS=ignore RAY_USE_CMAKE=1
+      env: MAC_WHEELS=1 PYTHONWARNINGS=ignore
       install:
-        - ./ci/travis/install-dependencies.sh
+        - ./ci/suppress_output ./ci/travis/install-dependencies.sh
         # This command should be kept in sync with ray/python/README-building-wheels.md.
         - ./python/build-wheel-macos.sh
       script:
diff --git a/doc/source/installation.rst b/doc/source/installation.rst
index dab5e16a4..6b56143a0 100644
--- a/doc/source/installation.rst
+++ b/doc/source/installation.rst
@@ -29,7 +29,6 @@ Here are links to the latest wheels (which are built off of master). To install
 `Linux Python 3.7`_  `MacOS Python 3.7`_
 `Linux Python 3.6`_  `MacOS Python 3.6`_
 `Linux Python 3.5`_  `MacOS Python 3.5`_
-`Linux Python 3.4`_  `MacOS Python 3.4`_
 `Linux Python 2.7`_  `MacOS Python 2.7`_
 ===================  ===================
 
@@ -37,12 +36,10 @@ Here are links to the latest wheels (which are built off of master). To install
 .. _`Linux Python 3.7`: https://s3-us-west-2.amazonaws.com/ray-wheels/latest/ray-0.7.0.dev1-cp37-cp37m-manylinux1_x86_64.whl
 .. _`Linux Python 3.6`: https://s3-us-west-2.amazonaws.com/ray-wheels/latest/ray-0.7.0.dev1-cp36-cp36m-manylinux1_x86_64.whl
 .. _`Linux Python 3.5`: https://s3-us-west-2.amazonaws.com/ray-wheels/latest/ray-0.7.0.dev1-cp35-cp35m-manylinux1_x86_64.whl
-.. _`Linux Python 3.4`: https://s3-us-west-2.amazonaws.com/ray-wheels/latest/ray-0.7.0.dev1-cp34-cp34m-manylinux1_x86_64.whl
 .. _`Linux Python 2.7`: https://s3-us-west-2.amazonaws.com/ray-wheels/latest/ray-0.7.0.dev1-cp27-cp27mu-manylinux1_x86_64.whl
 .. _`MacOS Python 3.7`: https://s3-us-west-2.amazonaws.com/ray-wheels/latest/ray-0.7.0.dev1-cp37-cp37m-macosx_10_6_intel.whl
 .. _`MacOS Python 3.6`: https://s3-us-west-2.amazonaws.com/ray-wheels/latest/ray-0.7.0.dev1-cp36-cp36m-macosx_10_6_intel.whl
 .. _`MacOS Python 3.5`: https://s3-us-west-2.amazonaws.com/ray-wheels/latest/ray-0.7.0.dev1-cp35-cp35m-macosx_10_6_intel.whl
-.. _`MacOS Python 3.4`: https://s3-us-west-2.amazonaws.com/ray-wheels/latest/ray-0.7.0.dev1-cp34-cp34m-macosx_10_6_intel.whl
 .. _`MacOS Python 2.7`: https://s3-us-west-2.amazonaws.com/ray-wheels/latest/ray-0.7.0.dev1-cp27-cp27m-macosx_10_6_intel.whl
 
 
diff --git a/python/build-wheel-macos.sh b/python/build-wheel-macos.sh
index c63566623..2fa4ab57b 100755
--- a/python/build-wheel-macos.sh
+++ b/python/build-wheel-macos.sh
@@ -14,27 +14,27 @@ MACPYTHON_PY_PREFIX=/Library/Frameworks/Python.framework/Versions
 DOWNLOAD_DIR=python_downloads
 
 PY_VERSIONS=("2.7.13"
-             "3.4.4"
              "3.5.3"
              "3.6.1"
              "3.7.0")
 PY_INSTS=("python-2.7.13-macosx10.6.pkg"
-          "python-3.4.4-macosx10.6.pkg"
           "python-3.5.3-macosx10.6.pkg"
           "python-3.6.1-macosx10.6.pkg"
           "python-3.7.0-macosx10.6.pkg")
 PY_MMS=("2.7"
-        "3.4"
         "3.5"
         "3.6"
         "3.7")
-# On python 3.7, a newer version of numpy seems to be necessary.
-NUMPY_VERSIONS=("1.10.4"
-                "1.10.4"
-                "1.10.4"
-                "1.10.4"
+
+# The minimum supported numpy version is 1.14, see
+# https://issues.apache.org/jira/browse/ARROW-3141
+NUMPY_VERSIONS=("1.14.5"
+                "1.14.5"
+                "1.14.5"
                 "1.14.5")
 
+./ci/travis/install-bazel.sh
+
 mkdir -p $DOWNLOAD_DIR
 mkdir -p .whl
 
diff --git a/python/build-wheel-manylinux1.sh b/python/build-wheel-manylinux1.sh
index 3b34b4b0a..332f79e4c 100755
--- a/python/build-wheel-manylinux1.sh
+++ b/python/build-wheel-manylinux1.sh
@@ -11,10 +11,11 @@ PYTHONS=("cp27-cp27mu"
          "cp36-cp36m"
          "cp37-cp37m")
 
-# On python 3.7, a newer version of numpy seems to be necessary.
-NUMPY_VERSIONS=("1.10.4"
-                "1.10.4"
-                "1.10.4"
+# The minimum supported numpy version is 1.14, see
+# https://issues.apache.org/jira/browse/ARROW-3141
+NUMPY_VERSIONS=("1.14.5"
+                "1.14.5"
+                "1.14.5"
                 "1.14.5")
 
 sudo apt-get install unzip
diff --git a/python/setup.py b/python/setup.py
index 07b9b3b92..d64559536 100644
--- a/python/setup.py
+++ b/python/setup.py
@@ -137,7 +137,7 @@ def find_version(*filepath):
 
 
 requires = [
-    "numpy >= 1.10.4",
+    "numpy >= 1.14",
     "filelock",
     "funcsigs",
     "click",