Update to Apache Spark 2.2.2 release
diff --git a/Makefile b/Makefile
index 4619ff3..8e0c591 100644
--- a/Makefile
+++ b/Makefile
@@ -27,7 +27,7 @@
 SNAPSHOT:=-SNAPSHOT
 endif
 
-APACHE_SPARK_VERSION?=2.2.0
+APACHE_SPARK_VERSION?=2.2.2
 SCALA_VERSION?=2.11
 IMAGE?=jupyter/all-spark-notebook:228ae7a44e0c
 EXAMPLE_IMAGE?=apache/toree-examples