diff --git a/ec2/spark_ec2.py b/ec2/spark_ec2.py
index 76c09f04e3a2..b28b4c5e93ed 100755
--- a/ec2/spark_ec2.py
+++ b/ec2/spark_ec2.py
@@ -51,7 +51,7 @@
     raw_input = input
     xrange = range
 
-SPARK_EC2_VERSION = "1.6.1"
+SPARK_EC2_VERSION = "1.6.3"
 SPARK_EC2_DIR = os.path.dirname(os.path.realpath(__file__))
 
 VALID_SPARK_VERSIONS = set([
@@ -77,6 +77,8 @@
     "1.5.2",
     "1.6.0",
     "1.6.1",
+    "1.6.2",
+    "1.6.3",
 ])
 
 SPARK_TACHYON_MAP = {
@@ -96,6 +98,8 @@
     "1.5.2": "0.7.1",
     "1.6.0": "0.8.2",
     "1.6.1": "0.8.2",
+    "1.6.2": "0.8.2",
+    "1.6.3": "0.8.2",
 }
 
 DEFAULT_SPARK_VERSION = SPARK_EC2_VERSION
@@ -103,7 +107,7 @@
 
 # Default location to get the spark-ec2 scripts (and ami-list) from
 DEFAULT_SPARK_EC2_GITHUB_REPO = "https://github.com/amplab/spark-ec2"
-DEFAULT_SPARK_EC2_BRANCH = "branch-1.5"
+DEFAULT_SPARK_EC2_BRANCH = "branch-1.6"
 
 
 def setup_external_libs(libs):