diff --git a/bin/pyspark b/bin/pyspark
index ad4132fb59eb0..ed35e1f445450 100755
--- a/bin/pyspark
+++ b/bin/pyspark
@@ -50,7 +50,7 @@ export PYSPARK_DRIVER_PYTHON_OPTS
 
 # Add the PySpark classes to the Python path:
 export PYTHONPATH="${SPARK_HOME}/python/:$PYTHONPATH"
-export PYTHONPATH="${SPARK_HOME}/python/lib/py4j-0.10.9-src.zip:$PYTHONPATH"
+export PYTHONPATH="${SPARK_HOME}/python/lib/py4j-0.10.9.1-src.zip:$PYTHONPATH"
 
 # Load the PySpark shell.py script when ./pyspark is used interactively:
 export OLD_PYTHONSTARTUP="$PYTHONSTARTUP"
diff --git a/bin/pyspark2.cmd b/bin/pyspark2.cmd
index dc34be1a41706..5741480fe5501 100644
--- a/bin/pyspark2.cmd
+++ b/bin/pyspark2.cmd
@@ -30,7 +30,7 @@ if "x%PYSPARK_DRIVER_PYTHON%"=="x" (
 )
 
 set PYTHONPATH=%SPARK_HOME%\python;%PYTHONPATH%
-set PYTHONPATH=%SPARK_HOME%\python\lib\py4j-0.10.9-src.zip;%PYTHONPATH%
+set PYTHONPATH=%SPARK_HOME%\python\lib\py4j-0.10.9.1-src.zip;%PYTHONPATH%
 
 set OLD_PYTHONSTARTUP=%PYTHONSTARTUP%
 set PYTHONSTARTUP=%SPARK_HOME%\python\pyspark\shell.py
diff --git a/core/pom.xml b/core/pom.xml
index 561a35402c1c3..9cd8848bca2ac 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -418,7 +418,7 @@
     <dependency>
       <groupId>net.sf.py4j</groupId>
       <artifactId>py4j</artifactId>
-      <version>0.10.9</version>
+      <version>0.10.9.1</version>
     </dependency>
     <dependency>
       <groupId>org.apache.spark</groupId>
diff --git a/core/src/main/scala/org/apache/spark/api/python/PythonUtils.scala b/core/src/main/scala/org/apache/spark/api/python/PythonUtils.scala
index 490b48719b6be..a6277747cb5fd 100644
--- a/core/src/main/scala/org/apache/spark/api/python/PythonUtils.scala
+++ b/core/src/main/scala/org/apache/spark/api/python/PythonUtils.scala
@@ -27,7 +27,7 @@ import org.apache.spark.SparkContext
 import org.apache.spark.api.java.{JavaRDD, JavaSparkContext}
 
 private[spark] object PythonUtils {
-  val PY4J_ZIP_NAME = "py4j-0.10.9-src.zip"
+  val PY4J_ZIP_NAME = "py4j-0.10.9.1-src.zip"
 
   /** Get the PYTHONPATH for PySpark, either from SPARK_HOME, if it is set, or from our JAR */
   def sparkPythonPath: String = {
diff --git a/dev/deps/spark-deps-hadoop-palantir b/dev/deps/spark-deps-hadoop-palantir
index 96785ce62437e..c9a28caed465f 100644
--- a/dev/deps/spark-deps-hadoop-palantir
+++ b/dev/deps/spark-deps-hadoop-palantir
@@ -145,7 +145,7 @@ parquet-format-structures/1.12.0-palantir.8//parquet-format-structures-1.12.0-pa
 parquet-hadoop/1.12.0-palantir.8//parquet-hadoop-1.12.0-palantir.8.jar
 parquet-jackson/1.12.0-palantir.8//parquet-jackson-1.12.0-palantir.8.jar
 protobuf-java/2.5.0//protobuf-java-2.5.0.jar
-py4j/0.10.9//py4j-0.10.9.jar
+py4j/0.10.9.1//py4j-0.10.9.1.jar
 pyrolite/4.30//pyrolite-4.30.jar
 safe-logging/1.5.1//safe-logging-1.5.1.jar
 scala-collection-compat_2.12/2.1.1//scala-collection-compat_2.12-2.1.1.jar
diff --git a/python/docs/Makefile b/python/docs/Makefile
index b11e3589065c3..17d6943558ad5 100644
--- a/python/docs/Makefile
+++ b/python/docs/Makefile
@@ -7,7 +7,7 @@ SPHINXBUILD   ?= sphinx-build
 PAPER         ?=
 BUILDDIR      ?= _build
 
-export PYTHONPATH=$(realpath ..):$(realpath ../lib/py4j-0.10.9-src.zip)
+export PYTHONPATH=$(realpath ..):$(realpath ../lib/py4j-0.10.9.1-src.zip)
 
 # User-friendly check for sphinx-build
 ifeq ($(shell which $(SPHINXBUILD) >/dev/null 2>&1; echo $$?), 1)
diff --git a/python/docs/make2.bat b/python/docs/make2.bat
index 2d7d929755a04..19226d4728de1 100644
--- a/python/docs/make2.bat
+++ b/python/docs/make2.bat
@@ -2,7 +2,7 @@
 
 REM Command file for Sphinx documentation
 
-set PYTHONPATH=..;..\lib\py4j-0.10.9-src.zip
+set PYTHONPATH=..;..\lib\py4j-0.10.9.1-src.zip
 
 
 if "%SPHINXBUILD%" == "" (
diff --git a/python/lib/py4j-0.10.9-src.zip b/python/lib/py4j-0.10.9.1-src.zip
similarity index 94%
rename from python/lib/py4j-0.10.9-src.zip
rename to python/lib/py4j-0.10.9.1-src.zip
index 2c49836147030..11eb331b6f2c6 100644
Binary files a/python/lib/py4j-0.10.9-src.zip and b/python/lib/py4j-0.10.9.1-src.zip differ
diff --git a/python/setup.py b/python/setup.py
index a1cde31aa0ada..e61b7d65608db 100644
--- a/python/setup.py
+++ b/python/setup.py
@@ -207,7 +207,7 @@ def _supports_symlinks():
             'pyspark.examples.src.main.python': ['*.py', '*/*.py']},
         scripts=scripts,
         license='http://www.apache.org/licenses/LICENSE-2.0',
-        install_requires=['py4j==0.10.9'],
+        install_requires=['py4j==0.10.9.1'],
         extras_require={
             'ml': ['numpy>=1.7'],
             'mllib': ['numpy>=1.7'],
diff --git a/resource-managers/yarn/src/test/scala/org/apache/spark/deploy/yarn/YarnClusterSuite.scala b/resource-managers/yarn/src/test/scala/org/apache/spark/deploy/yarn/YarnClusterSuite.scala
index 77e1976c152f7..4d21e8dee7184 100644
--- a/resource-managers/yarn/src/test/scala/org/apache/spark/deploy/yarn/YarnClusterSuite.scala
+++ b/resource-managers/yarn/src/test/scala/org/apache/spark/deploy/yarn/YarnClusterSuite.scala
@@ -446,7 +446,7 @@ class YarnClusterSuite extends BaseYarnClusterSuite {
     // needed locations.
     val sparkHome = sys.props("spark.test.home")
     val pythonPath = Seq(
-      s"$sparkHome/python/lib/py4j-0.10.9-src.zip",
+      s"$sparkHome/python/lib/py4j-0.10.9.1-src.zip",
       s"$sparkHome/python")
     val extraEnvVars = Map(
       "PYSPARK_ARCHIVES_PATH" -> pythonPath.map("local:" + _).mkString(File.pathSeparator),
diff --git a/sbin/spark-config.sh b/sbin/spark-config.sh
index b53442ec096a1..7389416bb3192 100755
--- a/sbin/spark-config.sh
+++ b/sbin/spark-config.sh
@@ -28,6 +28,6 @@ export SPARK_CONF_DIR="${SPARK_CONF_DIR:-"${SPARK_HOME}/conf"}"
 # Add the PySpark classes to the PYTHONPATH:
 if [ -z "${PYSPARK_PYTHONPATH_SET}" ]; then
   export PYTHONPATH="${SPARK_HOME}/python:${PYTHONPATH}"
-  export PYTHONPATH="${SPARK_HOME}/python/lib/py4j-0.10.9-src.zip:${PYTHONPATH}"
+  export PYTHONPATH="${SPARK_HOME}/python/lib/py4j-0.10.9.1-src.zip:${PYTHONPATH}"
   export PYSPARK_PYTHONPATH_SET=1
 fi