diff --git a/acceptance-tests/pom.xml b/acceptance-tests/pom.xml
index 305bd514bc..37027de1e7 100644
--- a/acceptance-tests/pom.xml
+++ b/acceptance-tests/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <artifactId>eclipse-collections-parent</artifactId>
         <groupId>org.eclipse.collections</groupId>
-        <version>11.1.0</version>
+        <version>12.0.0-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/eclipse-collections-api/pom.xml b/eclipse-collections-api/pom.xml
index 7a1ad00788..93524f1924 100644
--- a/eclipse-collections-api/pom.xml
+++ b/eclipse-collections-api/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>eclipse-collections-parent</artifactId>
         <groupId>org.eclipse.collections</groupId>
-        <version>11.1.0</version>
+        <version>12.0.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>eclipse-collections-api</artifactId>
diff --git a/eclipse-collections-code-generator-maven-plugin/pom.xml b/eclipse-collections-code-generator-maven-plugin/pom.xml
index cfde76e0e7..d8d12309f1 100644
--- a/eclipse-collections-code-generator-maven-plugin/pom.xml
+++ b/eclipse-collections-code-generator-maven-plugin/pom.xml
@@ -16,7 +16,7 @@
     <parent>
         <groupId>org.eclipse.collections</groupId>
         <artifactId>eclipse-collections-parent</artifactId>
-        <version>11.1.0</version>
+        <version>12.0.0-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/eclipse-collections-code-generator/pom.xml b/eclipse-collections-code-generator/pom.xml
index fe044ffb29..e49a11bff4 100644
--- a/eclipse-collections-code-generator/pom.xml
+++ b/eclipse-collections-code-generator/pom.xml
@@ -16,7 +16,7 @@
     <parent>
         <artifactId>eclipse-collections-parent</artifactId>
         <groupId>org.eclipse.collections</groupId>
-        <version>11.1.0</version>
+        <version>12.0.0-SNAPSHOT</version>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
diff --git a/eclipse-collections-forkjoin/pom.xml b/eclipse-collections-forkjoin/pom.xml
index 4db6ca0053..d990a08716 100644
--- a/eclipse-collections-forkjoin/pom.xml
+++ b/eclipse-collections-forkjoin/pom.xml
@@ -18,7 +18,7 @@
     <parent>
         <artifactId>eclipse-collections-parent</artifactId>
         <groupId>org.eclipse.collections</groupId>
-        <version>11.1.0</version>
+        <version>12.0.0-SNAPSHOT</version>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
diff --git a/eclipse-collections-testutils/pom.xml b/eclipse-collections-testutils/pom.xml
index bc2c73fdfd..1643b399e8 100644
--- a/eclipse-collections-testutils/pom.xml
+++ b/eclipse-collections-testutils/pom.xml
@@ -18,7 +18,7 @@
     <parent>
         <artifactId>eclipse-collections-parent</artifactId>
         <groupId>org.eclipse.collections</groupId>
-        <version>11.1.0</version>
+        <version>12.0.0-SNAPSHOT</version>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
diff --git a/eclipse-collections/pom.xml b/eclipse-collections/pom.xml
index a30d1003f9..ebcf623c00 100644
--- a/eclipse-collections/pom.xml
+++ b/eclipse-collections/pom.xml
@@ -18,7 +18,7 @@
     <parent>
         <artifactId>eclipse-collections-parent</artifactId>
         <groupId>org.eclipse.collections</groupId>
-        <version>11.1.0</version>
+        <version>12.0.0-SNAPSHOT</version>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
diff --git a/jcstress-tests/pom.xml b/jcstress-tests/pom.xml
index 63b9dacd2e..30b0ca8490 100644
--- a/jcstress-tests/pom.xml
+++ b/jcstress-tests/pom.xml
@@ -16,7 +16,7 @@
     <parent>
         <artifactId>eclipse-collections-parent</artifactId>
         <groupId>org.eclipse.collections</groupId>
-        <version>11.1.0</version>
+        <version>12.0.0-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/jmh-scala-tests/pom.xml b/jmh-scala-tests/pom.xml
index 186c1a9f1a..a4929d0d39 100644
--- a/jmh-scala-tests/pom.xml
+++ b/jmh-scala-tests/pom.xml
@@ -16,7 +16,7 @@
     <parent>
         <artifactId>eclipse-collections-parent</artifactId>
         <groupId>org.eclipse.collections</groupId>
-        <version>11.1.0</version>
+        <version>12.0.0-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/jmh-tests/pom.xml b/jmh-tests/pom.xml
index 33bc81056f..04304dd05b 100644
--- a/jmh-tests/pom.xml
+++ b/jmh-tests/pom.xml
@@ -16,7 +16,7 @@
     <parent>
         <artifactId>eclipse-collections-parent</artifactId>
         <groupId>org.eclipse.collections</groupId>
-        <version>11.1.0</version>
+        <version>12.0.0-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/junit-trait-runner/pom.xml b/junit-trait-runner/pom.xml
index 5228129dc8..58ef213db0 100644
--- a/junit-trait-runner/pom.xml
+++ b/junit-trait-runner/pom.xml
@@ -18,7 +18,7 @@
     <parent>
         <groupId>org.eclipse.collections</groupId>
         <artifactId>eclipse-collections-parent</artifactId>
-        <version>11.1.0</version>
+        <version>12.0.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>junit-trait-runner</artifactId>
diff --git a/p2-feature/org.eclipse.collections.feature/feature.xml b/p2-feature/org.eclipse.collections.feature/feature.xml
index 83fd8e1c41..cc1eb797a2 100644
--- a/p2-feature/org.eclipse.collections.feature/feature.xml
+++ b/p2-feature/org.eclipse.collections.feature/feature.xml
@@ -2,7 +2,7 @@
 <feature
       id="org.eclipse.collections.feature"
       label="Eclipse Collections"
-      version="11.1.0.qualifier"
+      version="12.0.0.qualifier"
       provider-name="Eclipse Collections"
       license-feature="org.eclipse.license"
       license-feature-version="1.0.1">
diff --git a/p2-feature/org.eclipse.collections.feature/pom.xml b/p2-feature/org.eclipse.collections.feature/pom.xml
index ef4d863dcc..60e1e9015c 100644
--- a/p2-feature/org.eclipse.collections.feature/pom.xml
+++ b/p2-feature/org.eclipse.collections.feature/pom.xml
@@ -15,7 +15,7 @@
     <parent>
         <groupId>org.eclipse.collections</groupId>
         <artifactId>p2-feature</artifactId>
-        <version>11.1.0-SNAPSHOT</version>
+        <version>12.0.0-SNAPSHOT</version>
     </parent>
     <artifactId>org.eclipse.collections.feature</artifactId>
     <packaging>eclipse-feature</packaging>
diff --git a/p2-feature/org.eclipse.collections.repository/category.xml b/p2-feature/org.eclipse.collections.repository/category.xml
index 7889914b9c..f0b006e304 100644
--- a/p2-feature/org.eclipse.collections.repository/category.xml
+++ b/p2-feature/org.eclipse.collections.repository/category.xml
@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <site>
-   <feature url="features/org.eclipse.collections.feature_11.1.0.qualifier.jar" id="org.eclipse.collections.feature" version="11.1.0.qualifier">
+   <feature url="features/org.eclipse.collections.feature_12.0.0.qualifier.jar" id="org.eclipse.collections.feature" version="12.0.0.qualifier">
       <category name="category_org.eclipse.collections"/>
    </feature>
-   <feature url="features/org.eclipse.collections.feature.source_11.1.0.qualifier.jar" id="org.eclipse.collections.feature.source" version="11.1.0.qualifier">
+   <feature url="features/org.eclipse.collections.feature.source_12.0.0.qualifier.jar" id="org.eclipse.collections.feature.source" version="12.0.0.qualifier">
       <category name="category_org.eclipse.collections"/>
    </feature>
    <category-def name="category_org.eclipse.collections" label="Eclipse Collections">
diff --git a/p2-feature/org.eclipse.collections.repository/pom.xml b/p2-feature/org.eclipse.collections.repository/pom.xml
index b19bbc9b8a..3b22fb69af 100644
--- a/p2-feature/org.eclipse.collections.repository/pom.xml
+++ b/p2-feature/org.eclipse.collections.repository/pom.xml
@@ -15,7 +15,7 @@
     <parent>
         <groupId>org.eclipse.collections</groupId>
         <artifactId>p2-feature</artifactId>
-        <version>11.1.0-SNAPSHOT</version>
+        <version>12.0.0-SNAPSHOT</version>
     </parent>
     <artifactId>p2-repository</artifactId>
     <packaging>eclipse-repository</packaging>
diff --git a/p2-feature/pom.xml b/p2-feature/pom.xml
index 0b7a58837b..dfe9e08790 100644
--- a/p2-feature/pom.xml
+++ b/p2-feature/pom.xml
@@ -12,7 +12,7 @@
     <modelVersion>4.0.0</modelVersion>
 
     <groupId>org.eclipse.collections</groupId>
-    <version>11.1.0-SNAPSHOT</version>
+    <version>12.0.0-SNAPSHOT</version>
     <artifactId>p2-feature</artifactId>
     <packaging>pom</packaging>
 
diff --git a/p2-repository/org.eclipse.collections/pom.xml b/p2-repository/org.eclipse.collections/pom.xml
index a041b4a129..66cfc7e75c 100644
--- a/p2-repository/org.eclipse.collections/pom.xml
+++ b/p2-repository/org.eclipse.collections/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>org.eclipse.collections</groupId>
     <artifactId>p2-repository</artifactId>
-    <version>11.1.0</version>
+    <version>12.0.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>org.eclipse.collections</artifactId>
diff --git a/p2-repository/pom.xml b/p2-repository/pom.xml
index 858a9ec860..f57ac267df 100644
--- a/p2-repository/pom.xml
+++ b/p2-repository/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>org.eclipse.collections</groupId>
         <artifactId>eclipse-collections-parent</artifactId>
-        <version>11.1.0</version>
+        <version>12.0.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>p2-repository</artifactId>
diff --git a/performance-tests/pom.xml b/performance-tests/pom.xml
index 526c05dd0c..7f8645efb5 100644
--- a/performance-tests/pom.xml
+++ b/performance-tests/pom.xml
@@ -15,7 +15,7 @@
     <parent>
         <artifactId>eclipse-collections-parent</artifactId>
         <groupId>org.eclipse.collections</groupId>
-        <version>11.1.0</version>
+        <version>12.0.0-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/pom.xml b/pom.xml
index 3fcf6b5d8e..6ba84c5970 100644
--- a/pom.xml
+++ b/pom.xml
@@ -18,7 +18,7 @@
 
     <groupId>org.eclipse.collections</groupId>
     <artifactId>eclipse-collections-parent</artifactId>
-    <version>11.1.0</version>
+    <version>12.0.0-SNAPSHOT</version>
 
     <packaging>pom</packaging>
 
diff --git a/scala-unit-tests/pom.xml b/scala-unit-tests/pom.xml
index 976a098a53..e4a9d95172 100644
--- a/scala-unit-tests/pom.xml
+++ b/scala-unit-tests/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <artifactId>eclipse-collections-parent</artifactId>
         <groupId>org.eclipse.collections</groupId>
-        <version>11.1.0</version>
+        <version>12.0.0-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/serialization-tests/pom.xml b/serialization-tests/pom.xml
index d491309f0c..82ec56c82d 100644
--- a/serialization-tests/pom.xml
+++ b/serialization-tests/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <artifactId>eclipse-collections-parent</artifactId>
         <groupId>org.eclipse.collections</groupId>
-        <version>11.1.0</version>
+        <version>12.0.0-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/test-coverage/pom.xml b/test-coverage/pom.xml
index 18bd569017..333296a091 100644
--- a/test-coverage/pom.xml
+++ b/test-coverage/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <artifactId>eclipse-collections-parent</artifactId>
         <groupId>org.eclipse.collections</groupId>
-        <version>11.1.0</version>
+        <version>12.0.0-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/unit-tests-java8/pom.xml b/unit-tests-java8/pom.xml
index 94d869dff6..cea8798a7c 100644
--- a/unit-tests-java8/pom.xml
+++ b/unit-tests-java8/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.eclipse.collections</groupId>
         <artifactId>eclipse-collections-parent</artifactId>
-        <version>11.1.0</version>
+        <version>12.0.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>unit-tests-java8</artifactId>
diff --git a/unit-tests/pom.xml b/unit-tests/pom.xml
index a0b1adfce5..3f10d8691b 100644
--- a/unit-tests/pom.xml
+++ b/unit-tests/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <artifactId>eclipse-collections-parent</artifactId>
         <groupId>org.eclipse.collections</groupId>
-        <version>11.1.0</version>
+        <version>12.0.0-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>