diff --git a/assembly/pom.xml b/assembly/pom.xml
index 720ca77c13e0f96461679f0d42a2600b46f20b83..bed426138cef597a1c5fdf077f79ae5104b3d536 100644
--- a/assembly/pom.xml
+++ b/assembly/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.1-SNAPSHOT</version>
+    <version>1.0.0</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/bagel/pom.xml b/bagel/pom.xml
index 85f6d9919d9c9941af2ce339efe91182e23ef5b7..08932bbb17a1d9b877c55aaab60104f717e0d733 100644
--- a/bagel/pom.xml
+++ b/bagel/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.1-SNAPSHOT</version>
+    <version>1.0.0</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/core/pom.xml b/core/pom.xml
index 47c2507c3c825d06ae7bfc74c09ff46c27791dee..3e226419b58d43962c51afdd62ce924069ca60f2 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.1-SNAPSHOT</version>
+    <version>1.0.0</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/examples/pom.xml b/examples/pom.xml
index b7cbb1a8bf85e1ea2b4e5a708b238bae90d863e1..006757a1ed9ae2bdd2cdc45933faf4225ee0bd78 100644
--- a/examples/pom.xml
+++ b/examples/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.1-SNAPSHOT</version>
+    <version>1.0.0</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/external/flume/pom.xml b/external/flume/pom.xml
index b8fc07f7d3e3f95501e4a158c3751b59546a22e8..3ba984eee1aa49aaee2ca1436ae691492262fe97 100644
--- a/external/flume/pom.xml
+++ b/external/flume/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.1-SNAPSHOT</version>
+    <version>1.0.0</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/external/kafka/pom.xml b/external/kafka/pom.xml
index 9eeb2e18aa989a354e570eb4ce0b06e6f5a2106b..cb4dd47a0cfabaa778c3aefca76ebecff10f2fae 100644
--- a/external/kafka/pom.xml
+++ b/external/kafka/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.1-SNAPSHOT</version>
+    <version>1.0.0</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/external/mqtt/pom.xml b/external/mqtt/pom.xml
index f4272cea8a183f5b91518db23248d5645d1e0de2..b10916d4d637c1510ac43896e7dc015000ef3943 100644
--- a/external/mqtt/pom.xml
+++ b/external/mqtt/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.1-SNAPSHOT</version>
+    <version>1.0.0</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/external/twitter/pom.xml b/external/twitter/pom.xml
index e4c2302635150a1a5513c8f18850c7e9beb92fb3..f33b583c3cfbd97016151ee6a518fe4708e8a759 100644
--- a/external/twitter/pom.xml
+++ b/external/twitter/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.1-SNAPSHOT</version>
+    <version>1.0.0</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/external/zeromq/pom.xml b/external/zeromq/pom.xml
index 8575c86d6ce1608bb3a1f8d69fa1b9941be32c41..a137112563a81e759729b6f93c4fbbd07fd73987 100644
--- a/external/zeromq/pom.xml
+++ b/external/zeromq/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.1-SNAPSHOT</version>
+    <version>1.0.0</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extras/spark-ganglia-lgpl/pom.xml b/extras/spark-ganglia-lgpl/pom.xml
index 9a506cd6588018146fdc15bf2a9b5f2bcbdb3dbe..86d893d5b9e9d7fa9f70905bcef3cf9f9d72b773 100644
--- a/extras/spark-ganglia-lgpl/pom.xml
+++ b/extras/spark-ganglia-lgpl/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.1-SNAPSHOT</version>
+    <version>1.0.0</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/graphx/pom.xml b/graphx/pom.xml
index 817f3fb18c538bef58826dcf4c65ce79691ccff5..2a07d8a48c1eca037de7781c121f9cf939d3e429 100644
--- a/graphx/pom.xml
+++ b/graphx/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.1-SNAPSHOT</version>
+    <version>1.0.0</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/mllib/pom.xml b/mllib/pom.xml
index 4c67de8b24b67afb43f9adb2b439d2dedb7b0af4..3b5c7e81211c209f55d328117916125584b1a27e 100644
--- a/mllib/pom.xml
+++ b/mllib/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.1-SNAPSHOT</version>
+    <version>1.0.0</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/pom.xml b/pom.xml
index f04d7e436f7c66829b8d3815ae65f58399c7b0f2..1d99e8b259e76027ce71b02b930d513ef8b0d8f7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -25,7 +25,7 @@
   </parent>
   <groupId>org.apache.spark</groupId>
   <artifactId>spark-parent</artifactId>
-  <version>1.0.1-SNAPSHOT</version>
+  <version>1.0.0</version>
   <packaging>pom</packaging>
   <name>Spark Project Parent POM</name>
   <url>http://spark.apache.org/</url>
@@ -40,7 +40,7 @@
     <connection>scm:git:git@github.com:apache/spark.git</connection>
     <developerConnection>scm:git:https://git-wip-us.apache.org/repos/asf/spark.git</developerConnection>
     <url>scm:git:git@github.com:apache/spark.git</url>
-    <tag>HEAD</tag>
+    <tag>v1.0.0-rc9</tag>
   </scm>
   <developers>
     <developer>
diff --git a/repl/pom.xml b/repl/pom.xml
index 4670e87e0093558977ff876b6d19abb71dc82cd0..debf0588916eb94c75fb870497a9f9bd951ae049 100644
--- a/repl/pom.xml
+++ b/repl/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.1-SNAPSHOT</version>
+    <version>1.0.0</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/sql/catalyst/pom.xml b/sql/catalyst/pom.xml
index d3f65de16f5f71522abbf6058585e49f31e2f57f..903001de74cb1dcc8613f3aafb1ab0a18eebd2eb 100644
--- a/sql/catalyst/pom.xml
+++ b/sql/catalyst/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.1-SNAPSHOT</version>
+    <version>1.0.0</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/sql/core/pom.xml b/sql/core/pom.xml
index 6afed6df7e48dc2149a14750a67acb884a863c31..b7b7b587111abf3f935870af55329bcb2f445ece 100644
--- a/sql/core/pom.xml
+++ b/sql/core/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.1-SNAPSHOT</version>
+    <version>1.0.0</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/sql/hive/pom.xml b/sql/hive/pom.xml
index 0c5565707e00ca5ec9a5b7cd4c7faad870b94852..bd5e92b0a2ee6706a6d12cbdd15fe83dbd73084e 100644
--- a/sql/hive/pom.xml
+++ b/sql/hive/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.1-SNAPSHOT</version>
+    <version>1.0.0</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/streaming/pom.xml b/streaming/pom.xml
index c2bf2ed26fadc22aa794c7d588d8b6243f06863f..f48ff8f9ea1965655037c2ff0a113c458d145e88 100644
--- a/streaming/pom.xml
+++ b/streaming/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.1-SNAPSHOT</version>
+    <version>1.0.0</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/tools/pom.xml b/tools/pom.xml
index 1339a702a0dbadbc10e46636c922f2c66f0daafe..7e8f2d338533a3029f56cd8639386f9e3af05186 100644
--- a/tools/pom.xml
+++ b/tools/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.1-SNAPSHOT</version>
+    <version>1.0.0</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/yarn/pom.xml b/yarn/pom.xml
index 983ce6f7e255548b990c3e8db9cd55971b96eff3..5b2fcea2ec49178db1445f781049d1099184637c 100644
--- a/yarn/pom.xml
+++ b/yarn/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.1-SNAPSHOT</version>
+    <version>1.0.0</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/yarn/stable/pom.xml b/yarn/stable/pom.xml
index 55687ebfe8c8d107ee7af51dc1bec8d6a14da0ed..b12b591d720796961321f1c9f4bedca1b49e497e 100644
--- a/yarn/stable/pom.xml
+++ b/yarn/stable/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>yarn-parent_2.10</artifactId>
-    <version>1.0.1-SNAPSHOT</version>
+    <version>1.0.0</version>
     <relativePath>../pom.xml</relativePath>
   </parent>