Adjust version for alpha snapshot.
diff --git a/nephele/nephele-clustermanager/pom.xml b/nephele/nephele-clustermanager/pom.xml
index 7282d71..22a64d5 100644
--- a/nephele/nephele-clustermanager/pom.xml
+++ b/nephele/nephele-clustermanager/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
 		<groupId>eu.stratosphere</groupId>
 		<artifactId>nephele</artifactId>
-		<version>0.4-SNAPSHOT</version>
+		<version>0.4-alpha.1-SNAPSHOT</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/nephele/nephele-common/pom.xml b/nephele/nephele-common/pom.xml
index bc37120..91253b4 100644
--- a/nephele/nephele-common/pom.xml
+++ b/nephele/nephele-common/pom.xml
@@ -8,7 +8,7 @@
 	<parent>
 		<artifactId>nephele</artifactId>
 		<groupId>eu.stratosphere</groupId>
-		<version>0.4-SNAPSHOT</version>
+		<version>0.4-alpha.1-SNAPSHOT</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/nephele/nephele-examples/pom.xml b/nephele/nephele-examples/pom.xml
index 23e6b97..52c1cf5 100644
--- a/nephele/nephele-examples/pom.xml
+++ b/nephele/nephele-examples/pom.xml
@@ -8,7 +8,7 @@
 	<parent>
 		<artifactId>nephele</artifactId>
 		<groupId>eu.stratosphere</groupId>
-		<version>0.4-SNAPSHOT</version>
+		<version>0.4-alpha.1-SNAPSHOT</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/nephele/nephele-hdfs/pom.xml b/nephele/nephele-hdfs/pom.xml
index 93cfd34..9c0e7b9 100644
--- a/nephele/nephele-hdfs/pom.xml
+++ b/nephele/nephele-hdfs/pom.xml
@@ -8,7 +8,7 @@
 	<parent>
 		<artifactId>nephele</artifactId>
 		<groupId>eu.stratosphere</groupId>
-		<version>0.4-SNAPSHOT</version>
+		<version>0.4-alpha.1-SNAPSHOT</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/nephele/nephele-management/pom.xml b/nephele/nephele-management/pom.xml
index cd1eade..830d341 100644
--- a/nephele/nephele-management/pom.xml
+++ b/nephele/nephele-management/pom.xml
@@ -8,7 +8,7 @@
 	<parent>
 		<artifactId>nephele</artifactId>
 		<groupId>eu.stratosphere</groupId>
-		<version>0.4-SNAPSHOT</version>
+		<version>0.4-alpha.1-SNAPSHOT</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/nephele/nephele-profiling/pom.xml b/nephele/nephele-profiling/pom.xml
index 7ada513..200e972 100644
--- a/nephele/nephele-profiling/pom.xml
+++ b/nephele/nephele-profiling/pom.xml
@@ -8,7 +8,7 @@
 	<parent>
 		<artifactId>nephele</artifactId>
 		<groupId>eu.stratosphere</groupId>
-		<version>0.4-SNAPSHOT</version>
+		<version>0.4-alpha.1-SNAPSHOT</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/nephele/nephele-queuescheduler/pom.xml b/nephele/nephele-queuescheduler/pom.xml
index ed1b121..ce87a06 100644
--- a/nephele/nephele-queuescheduler/pom.xml
+++ b/nephele/nephele-queuescheduler/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>eu.stratosphere</groupId>
 		<artifactId>nephele</artifactId>
-		<version>0.4-SNAPSHOT</version>
+		<version>0.4-alpha.1-SNAPSHOT</version>
 		<relativePath>..</relativePath>
 	</parent>
 	
diff --git a/nephele/nephele-s3/pom.xml b/nephele/nephele-s3/pom.xml
index 15a8922..3467984 100644
--- a/nephele/nephele-s3/pom.xml
+++ b/nephele/nephele-s3/pom.xml
@@ -8,7 +8,7 @@
 	<parent>
 		<artifactId>nephele</artifactId>
 		<groupId>eu.stratosphere</groupId>
-		<version>0.4-SNAPSHOT</version>
+		<version>0.4-alpha.1-SNAPSHOT</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/nephele/nephele-server/pom.xml b/nephele/nephele-server/pom.xml
index af20a5a..864f91f 100644
--- a/nephele/nephele-server/pom.xml
+++ b/nephele/nephele-server/pom.xml
@@ -8,7 +8,7 @@
 	<parent>
 		<artifactId>nephele</artifactId>
 		<groupId>eu.stratosphere</groupId>
-		<version>0.4-SNAPSHOT</version>
+		<version>0.4-alpha.1-SNAPSHOT</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/nephele/nephele-visualization/pom.xml b/nephele/nephele-visualization/pom.xml
index bd1b136..de928e0 100644
--- a/nephele/nephele-visualization/pom.xml
+++ b/nephele/nephele-visualization/pom.xml
@@ -8,7 +8,7 @@
 	<parent>
 		<artifactId>nephele</artifactId>
 		<groupId>eu.stratosphere</groupId>
-		<version>0.4-SNAPSHOT</version>
+		<version>0.4-alpha.1-SNAPSHOT</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/nephele/pom.xml b/nephele/pom.xml
index c358514..f40f33b 100644
--- a/nephele/pom.xml
+++ b/nephele/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<groupId>eu.stratosphere</groupId>
 		<artifactId>stratosphere</artifactId>
-		<version>0.4-SNAPSHOT</version>
+		<version>0.4-alpha.1-SNAPSHOT</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/pact-scala/pact-scala-core/pom.xml b/pact-scala/pact-scala-core/pom.xml
index f7e8840..4a4d212 100644
--- a/pact-scala/pact-scala-core/pom.xml
+++ b/pact-scala/pact-scala-core/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <artifactId>pact-scala</artifactId>
         <groupId>eu.stratosphere</groupId>
-        <version>0.4-SNAPSHOT</version>
+        <version>0.4-alpha.1-SNAPSHOT</version>
         <relativePath>..</relativePath>
     </parent>
 
diff --git a/pact-scala/pact-scala-examples/pom.xml b/pact-scala/pact-scala-examples/pom.xml
index 9843aac..89063ce 100644
--- a/pact-scala/pact-scala-examples/pom.xml
+++ b/pact-scala/pact-scala-examples/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <artifactId>pact-scala</artifactId>
     <groupId>eu.stratosphere</groupId>
-    <version>0.4-SNAPSHOT</version>
+    <version>0.4-alpha.1-SNAPSHOT</version>
     <relativePath>..</relativePath>
   </parent>
   
diff --git a/pact-scala/pact-scala-scratch/pom.xml b/pact-scala/pact-scala-scratch/pom.xml
index 6b18b79..c717cbb 100644
--- a/pact-scala/pact-scala-scratch/pom.xml
+++ b/pact-scala/pact-scala-scratch/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <artifactId>pact-scala</artifactId>
     <groupId>eu.stratosphere</groupId>
-    <version>0.4-SNAPSHOT</version>
+    <version>0.4-alpha.1-SNAPSHOT</version>
     <relativePath>..</relativePath>
   </parent>
 
diff --git a/pact-scala/pact-scala-tests/pom.xml b/pact-scala/pact-scala-tests/pom.xml
index d956af6..d931c24 100644
--- a/pact-scala/pact-scala-tests/pom.xml
+++ b/pact-scala/pact-scala-tests/pom.xml
@@ -7,7 +7,7 @@
   <parent>
 	<artifactId>pact-scala</artifactId>
 	<groupId>eu.stratosphere</groupId>
-	<version>0.4-SNAPSHOT</version>
+	<version>0.4-alpha.1-SNAPSHOT</version>
 	<relativePath>..</relativePath>
   </parent>
 
diff --git a/pact-scala/pom.xml b/pact-scala/pom.xml
index 3a11b24..1e0b427 100644
--- a/pact-scala/pom.xml
+++ b/pact-scala/pom.xml
@@ -8,7 +8,7 @@
     <parent>
 		<groupId>eu.stratosphere</groupId>
 		<artifactId>stratosphere</artifactId>
-		<version>0.4-SNAPSHOT</version>
+		<version>0.4-alpha.1-SNAPSHOT</version>
 		<relativePath>..</relativePath>
     </parent>
 
diff --git a/pact/pact-array-datamodel/pom.xml b/pact/pact-array-datamodel/pom.xml
index b472002..417ac35 100644
--- a/pact/pact-array-datamodel/pom.xml
+++ b/pact/pact-array-datamodel/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<artifactId>pact</artifactId>
 		<groupId>eu.stratosphere</groupId>
-		<version>0.4-SNAPSHOT</version>
+		<version>0.4-alpha.1-SNAPSHOT</version>
 		<relativePath>..</relativePath>
 	</parent>
 	
diff --git a/pact/pact-clients/pom.xml b/pact/pact-clients/pom.xml
index e6277c8..b4bd26e 100644
--- a/pact/pact-clients/pom.xml
+++ b/pact/pact-clients/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<artifactId>pact</artifactId>
 		<groupId>eu.stratosphere</groupId>
-		<version>0.4-SNAPSHOT</version>
+		<version>0.4-alpha.1-SNAPSHOT</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/pact/pact-common/pom.xml b/pact/pact-common/pom.xml
index 2b33f72..e212139 100644
--- a/pact/pact-common/pom.xml
+++ b/pact/pact-common/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<artifactId>pact</artifactId>
 		<groupId>eu.stratosphere</groupId>
-		<version>0.4-SNAPSHOT</version>
+		<version>0.4-alpha.1-SNAPSHOT</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/pact/pact-compiler/pom.xml b/pact/pact-compiler/pom.xml
index 2561093..0435775 100644
--- a/pact/pact-compiler/pom.xml
+++ b/pact/pact-compiler/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<artifactId>pact</artifactId>
 		<groupId>eu.stratosphere</groupId>
-		<version>0.4-SNAPSHOT</version>
+		<version>0.4-alpha.1-SNAPSHOT</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/pact/pact-examples/pom.xml b/pact/pact-examples/pom.xml
index 5eeb3e2..280e025 100644
--- a/pact/pact-examples/pom.xml
+++ b/pact/pact-examples/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<artifactId>pact</artifactId>
 		<groupId>eu.stratosphere</groupId>
-		<version>0.4-SNAPSHOT</version>
+		<version>0.4-alpha.1-SNAPSHOT</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/pact/pact-hbase/pom.xml b/pact/pact-hbase/pom.xml
index b9c5369..e2ba3a7 100644
--- a/pact/pact-hbase/pom.xml
+++ b/pact/pact-hbase/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<artifactId>pact</artifactId>
 		<groupId>eu.stratosphere</groupId>
-		<version>0.4-SNAPSHOT</version>
+		<version>0.4-alpha.1-SNAPSHOT</version>
 	    <relativePath>..</relativePath>
     </parent>
   
diff --git a/pact/pact-runtime/pom.xml b/pact/pact-runtime/pom.xml
index 3b1204e..da381cc 100644
--- a/pact/pact-runtime/pom.xml
+++ b/pact/pact-runtime/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<artifactId>pact</artifactId>
 		<groupId>eu.stratosphere</groupId>
-		<version>0.4-SNAPSHOT</version>
+		<version>0.4-alpha.1-SNAPSHOT</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/pact/pact-tests/pom.xml b/pact/pact-tests/pom.xml
index e060c0e..6fb4427 100644
--- a/pact/pact-tests/pom.xml
+++ b/pact/pact-tests/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<artifactId>pact</artifactId>
 		<groupId>eu.stratosphere</groupId>
-		<version>0.4-SNAPSHOT</version>
+		<version>0.4-alpha.1-SNAPSHOT</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/pact/pom.xml b/pact/pom.xml
index 42a40be..2c5a5b8 100644
--- a/pact/pom.xml
+++ b/pact/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<groupId>eu.stratosphere</groupId>
 		<artifactId>stratosphere</artifactId>
-		<version>0.4-SNAPSHOT</version>
+		<version>0.4-alpha.1-SNAPSHOT</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/pom.xml b/pom.xml
index a73c3bf..c126295 100644
--- a/pom.xml
+++ b/pom.xml
@@ -12,7 +12,7 @@
 
 	<groupId>eu.stratosphere</groupId>
 	<artifactId>stratosphere</artifactId>
-	<version>0.4-SNAPSHOT</version>
+	<version>0.4-alpha.1-SNAPSHOT</version>
 
 	<name>stratosphere</name>
 	<packaging>pom</packaging>
diff --git a/stratosphere-dist/pom.xml b/stratosphere-dist/pom.xml
index 76bc39d..685b83a 100644
--- a/stratosphere-dist/pom.xml
+++ b/stratosphere-dist/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<groupId>eu.stratosphere</groupId>
 		<artifactId>stratosphere</artifactId>
-		<version>0.4-SNAPSHOT</version>
+		<version>0.4-alpha.1-SNAPSHOT</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/tools/change-version b/tools/change-version
index 06bea7b..e0604be 100755
--- a/tools/change-version
+++ b/tools/change-version
@@ -1,2 +1,2 @@
 #!/bin/bash
-find .. -name 'pom.xml' -type f -exec sed -i 's#<version>0.4-SNAPSHOT</version>#<version>0.4-alpha.0</version>#' {} \;
+find .. -name 'pom.xml' -type f -exec sed -i 's#<version>0.4-SNAPSHOT</version>#<version>0.4-alpha.1-SNAPSHOT</version>#' {} \;