diff --git a/assembly/pom.xml b/assembly/pom.xml
index bed426138cef597a1c5fdf077f79ae5104b3d536..963357b9ab16780a663db3e4bf6e3d3d688ada78 100644
--- a/assembly/pom.xml
+++ b/assembly/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.0</version>
+    <version>1.0.0-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
@@ -122,8 +122,8 @@
                 <transformer implementation="org.apache.maven.plugins.shade.resource.DontIncludeResourceTransformer">
                   <resource>log4j.properties</resource>
                 </transformer>
-                <transformer implementation="org.apache.maven.plugins.shade.resource.ApacheLicenseResourceTransformer" />
-                <transformer implementation="org.apache.maven.plugins.shade.resource.ApacheNoticeResourceTransformer" />
+                <transformer implementation="org.apache.maven.plugins.shade.resource.ApacheLicenseResourceTransformer"/>
+                <transformer implementation="org.apache.maven.plugins.shade.resource.ApacheNoticeResourceTransformer"/>
               </transformers>
             </configuration>
           </execution>
diff --git a/bagel/pom.xml b/bagel/pom.xml
index 08932bbb17a1d9b877c55aaab60104f717e0d733..355f437c5b16a4a0e86f12cdb147ac4d9aff17ac 100644
--- a/bagel/pom.xml
+++ b/bagel/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.0</version>
+    <version>1.0.0-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/core/pom.xml b/core/pom.xml
index 3e226419b58d43962c51afdd62ce924069ca60f2..bab50f5ce2888bc36aab5e1a45e9c3ec660166bf 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.0</version>
+    <version>1.0.0-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/examples/pom.xml b/examples/pom.xml
index 006757a1ed9ae2bdd2cdc45933faf4225ee0bd78..874bcd7916f35e693a647c7d9c9abf4fb3fa50c1 100644
--- a/examples/pom.xml
+++ b/examples/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.0</version>
+    <version>1.0.0-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/external/flume/pom.xml b/external/flume/pom.xml
index 3ba984eee1aa49aaee2ca1436ae691492262fe97..6aec215687fe0cb060701cdc92f9a934a19a433e 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>1.0.0</version>
+    <version>1.0.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/external/kafka/pom.xml b/external/kafka/pom.xml
index cb4dd47a0cfabaa778c3aefca76ebecff10f2fae..979eb0ca624bd2be6415a535ab6e005915723844 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>1.0.0</version>
+    <version>1.0.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/external/mqtt/pom.xml b/external/mqtt/pom.xml
index b10916d4d637c1510ac43896e7dc015000ef3943..7b2dc5ba1d7f9e393af7998234fe34be2710f723 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>1.0.0</version>
+    <version>1.0.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/external/twitter/pom.xml b/external/twitter/pom.xml
index f33b583c3cfbd97016151ee6a518fe4708e8a759..5766d3a0d44ec08314b133795c6cbfd0ab4e1180 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>1.0.0</version>
+    <version>1.0.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/external/zeromq/pom.xml b/external/zeromq/pom.xml
index a137112563a81e759729b6f93c4fbbd07fd73987..4ed4196bd86624335b269d328d17f337d97909b6 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>1.0.0</version>
+    <version>1.0.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extras/spark-ganglia-lgpl/pom.xml b/extras/spark-ganglia-lgpl/pom.xml
index 86d893d5b9e9d7fa9f70905bcef3cf9f9d72b773..11ac827ed54a013863fe5a7bd1d975976fbe0a3f 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>1.0.0</version>
+    <version>1.0.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/graphx/pom.xml b/graphx/pom.xml
index 2a07d8a48c1eca037de7781c121f9cf939d3e429..dc108d2fe7fbd1b75d117653d23d37b8b2fe5d44 100644
--- a/graphx/pom.xml
+++ b/graphx/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.0</version>
+    <version>1.0.0-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/mllib/pom.xml b/mllib/pom.xml
index 3b5c7e81211c209f55d328117916125584b1a27e..cdd33dbb7970d615b2cad4bf8241507040cae7b6 100644
--- a/mllib/pom.xml
+++ b/mllib/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.0</version>
+    <version>1.0.0-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/pom.xml b/pom.xml
index 609e9ce8a49215bb9a47b525af5468bfeaf45ba1..41be1a937ec40c595404fb1ec132373a38763a61 100644
--- a/pom.xml
+++ b/pom.xml
@@ -25,7 +25,7 @@
   </parent>
   <groupId>org.apache.spark</groupId>
   <artifactId>spark-parent</artifactId>
-  <version>1.0.0</version>
+  <version>1.0.0-SNAPSHOT</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>v1.0.0-rc11</tag>
+    <tag>HEAD</tag>
   </scm>
   <developers>
     <developer>
diff --git a/repl/pom.xml b/repl/pom.xml
index debf0588916eb94c75fb870497a9f9bd951ae049..b761a176ce256900c42abbfb867644321d2e6d46 100644
--- a/repl/pom.xml
+++ b/repl/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.0</version>
+    <version>1.0.0-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/sql/catalyst/pom.xml b/sql/catalyst/pom.xml
index 903001de74cb1dcc8613f3aafb1ab0a18eebd2eb..615ce810c27deac04b2eb8eaa57a78f3f20369ed 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>1.0.0</version>
+    <version>1.0.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/sql/core/pom.xml b/sql/core/pom.xml
index b7b7b587111abf3f935870af55329bcb2f445ece..25a5b924403b85c1bdc9c9ff2793b22c43c584b9 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>1.0.0</version>
+    <version>1.0.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/sql/hive/pom.xml b/sql/hive/pom.xml
index bd5e92b0a2ee6706a6d12cbdd15fe83dbd73084e..ba9802646bf9c313d75942d6bd5ccac816e2c6d2 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>1.0.0</version>
+    <version>1.0.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/streaming/pom.xml b/streaming/pom.xml
index f48ff8f9ea1965655037c2ff0a113c458d145e88..6435224a14674a48f5538de13670dcfd95fd70e4 100644
--- a/streaming/pom.xml
+++ b/streaming/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.0</version>
+    <version>1.0.0-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/tools/pom.xml b/tools/pom.xml
index 7e8f2d338533a3029f56cd8639386f9e3af05186..1875c497bc61cf69250d3400e745b07d44b10ac5 100644
--- a/tools/pom.xml
+++ b/tools/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.0</version>
+    <version>1.0.0-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/yarn/pom.xml b/yarn/pom.xml
index 5b2fcea2ec49178db1445f781049d1099184637c..6993c89525d8c82b40664082db78e3ea9c640208 100644
--- a/yarn/pom.xml
+++ b/yarn/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent</artifactId>
-    <version>1.0.0</version>
+    <version>1.0.0-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/yarn/stable/pom.xml b/yarn/stable/pom.xml
index b12b591d720796961321f1c9f4bedca1b49e497e..0780f251b595ce7f3f2fd8a61a62557071f2ed4e 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>1.0.0</version>
+    <version>1.0.0-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>