diff --git a/EmbedSingularityExample/pom.xml b/EmbedSingularityExample/pom.xml
index c71d97aeae..5a17237f2c 100644
--- a/EmbedSingularityExample/pom.xml
+++ b/EmbedSingularityExample/pom.xml
@@ -1,12 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
 
   <parent>
     <groupId>com.hubspot</groupId>
     <artifactId>Singularity</artifactId>
-    <version>0.4.0-SNAPSHOT</version>
+    <version>0.4.0</version>
   </parent>
 
   <artifactId>EmbedSingularityExample</artifactId>
diff --git a/SingularityBase/pom.xml b/SingularityBase/pom.xml
index 4e9070b9ee..20e3fb94ef 100644
--- a/SingularityBase/pom.xml
+++ b/SingularityBase/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.hubspot</groupId>
     <artifactId>Singularity</artifactId>
-    <version>0.4.0-SNAPSHOT</version>
+    <version>0.4.0</version>
   </parent>
 
   <artifactId>SingularityBase</artifactId>
diff --git a/SingularityClient/pom.xml b/SingularityClient/pom.xml
index e9352b7afe..84d4973548 100644
--- a/SingularityClient/pom.xml
+++ b/SingularityClient/pom.xml
@@ -1,12 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
 
   <parent>
     <groupId>com.hubspot</groupId>
     <artifactId>Singularity</artifactId>
-    <version>0.4.0-SNAPSHOT</version>
+    <version>0.4.0</version>
   </parent>
 
   <artifactId>SingularityClient</artifactId>
diff --git a/SingularityExecutor/pom.xml b/SingularityExecutor/pom.xml
index f5da3abfe5..c82fd5d65a 100644
--- a/SingularityExecutor/pom.xml
+++ b/SingularityExecutor/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.hubspot</groupId>
     <artifactId>Singularity</artifactId>
-    <version>0.4.0-SNAPSHOT</version>
+    <version>0.4.0</version>
   </parent>
 
   <artifactId>SingularityExecutor</artifactId>
diff --git a/SingularityExecutorCleanup/pom.xml b/SingularityExecutorCleanup/pom.xml
index 044e506fae..bf39b1cf9d 100644
--- a/SingularityExecutorCleanup/pom.xml
+++ b/SingularityExecutorCleanup/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.hubspot</groupId>
     <artifactId>Singularity</artifactId>
-    <version>0.4.0-SNAPSHOT</version>
+    <version>0.4.0</version>
   </parent>
 
   <artifactId>SingularityExecutorCleanup</artifactId>
diff --git a/SingularityLogWatcher/pom.xml b/SingularityLogWatcher/pom.xml
index b8b76dc50a..fd6e0c677c 100644
--- a/SingularityLogWatcher/pom.xml
+++ b/SingularityLogWatcher/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.hubspot</groupId>
     <artifactId>Singularity</artifactId>
-    <version>0.4.0-SNAPSHOT</version>
+    <version>0.4.0</version>
   </parent>
 
   <artifactId>SingularityLogWatcher</artifactId>
diff --git a/SingularityMesosClient/pom.xml b/SingularityMesosClient/pom.xml
index a57c755a90..803b4e865d 100644
--- a/SingularityMesosClient/pom.xml
+++ b/SingularityMesosClient/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.hubspot</groupId>
     <artifactId>Singularity</artifactId>
-    <version>0.4.0-SNAPSHOT</version>
+    <version>0.4.0</version>
   </parent>
 
   <artifactId>SingularityMesosClient</artifactId>
diff --git a/SingularityOOMKiller/pom.xml b/SingularityOOMKiller/pom.xml
index d73c891548..f89900f178 100644
--- a/SingularityOOMKiller/pom.xml
+++ b/SingularityOOMKiller/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.hubspot</groupId>
     <artifactId>Singularity</artifactId>
-    <version>0.4.0-SNAPSHOT</version>
+    <version>0.4.0</version>
   </parent>
 
   <artifactId>SingularityOOMKiller</artifactId>
diff --git a/SingularityRunnerBase/pom.xml b/SingularityRunnerBase/pom.xml
index 9bc5cdc19d..f974b90403 100644
--- a/SingularityRunnerBase/pom.xml
+++ b/SingularityRunnerBase/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.hubspot</groupId>
     <artifactId>Singularity</artifactId>
-    <version>0.4.0-SNAPSHOT</version>
+    <version>0.4.0</version>
   </parent>
 
   <artifactId>SingularityRunnerBase</artifactId>
diff --git a/SingularityS3Base/pom.xml b/SingularityS3Base/pom.xml
index f5f81e571e..2ee0db24e3 100644
--- a/SingularityS3Base/pom.xml
+++ b/SingularityS3Base/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.hubspot</groupId>
     <artifactId>Singularity</artifactId>
-    <version>0.4.0-SNAPSHOT</version>
+    <version>0.4.0</version>
   </parent>
 
   <artifactId>SingularityS3Base</artifactId>
diff --git a/SingularityS3Downloader/pom.xml b/SingularityS3Downloader/pom.xml
index 2b5be72c28..7a64b1d15e 100644
--- a/SingularityS3Downloader/pom.xml
+++ b/SingularityS3Downloader/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.hubspot</groupId>
     <artifactId>Singularity</artifactId>
-    <version>0.4.0-SNAPSHOT</version>
+    <version>0.4.0</version>
   </parent>
 
   <artifactId>SingularityS3Downloader</artifactId>
diff --git a/SingularityS3Uploader/pom.xml b/SingularityS3Uploader/pom.xml
index e60d0f89c6..31811e2d2d 100644
--- a/SingularityS3Uploader/pom.xml
+++ b/SingularityS3Uploader/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.hubspot</groupId>
     <artifactId>Singularity</artifactId>
-    <version>0.4.0-SNAPSHOT</version>
+    <version>0.4.0</version>
   </parent>
 
   <artifactId>SingularityS3Uploader</artifactId>
diff --git a/SingularityService/pom.xml b/SingularityService/pom.xml
index db1ea03d8e..8e3f77c2f2 100644
--- a/SingularityService/pom.xml
+++ b/SingularityService/pom.xml
@@ -1,12 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
 
   <parent>
     <groupId>com.hubspot</groupId>
     <artifactId>Singularity</artifactId>
-    <version>0.4.0-SNAPSHOT</version>
+    <version>0.4.0</version>
   </parent>
 
   <artifactId>SingularityService</artifactId>
@@ -520,7 +519,7 @@
                     </goals>
                   </pluginExecutionFilter>
                   <action>
-                    <ignore></ignore>
+                    <ignore />
                   </action>
                 </pluginExecution>
                 <pluginExecution>
@@ -533,7 +532,7 @@
                     </goals>
                   </pluginExecutionFilter>
                   <action>
-                    <ignore></ignore>
+                    <ignore />
                   </action>
                 </pluginExecution>
               </pluginExecutions>
diff --git a/pom.xml b/pom.xml
index bec49ac200..6da5108255 100644
--- a/pom.xml
+++ b/pom.xml
@@ -10,14 +10,14 @@
 
   <groupId>com.hubspot</groupId>
   <artifactId>Singularity</artifactId>
-  <version>0.4.0-SNAPSHOT</version>
+  <version>0.4.0</version>
   <packaging>pom</packaging>
 
   <scm>
     <connection>scm:git:git@github.com:HubSpot/Singularity.git</connection>
     <developerConnection>scm:git:ssh://git@github.com/HubSpot/Singularity.git</developerConnection>
     <url>git@github.com:HubSpot/Singularity.git</url>
-    <tag>HEAD</tag>
+    <tag>Singularity-0.4.0</tag>
   </scm>
 
   <developers>