diff --git a/Triangle.AbstractMachine.Disassembler/pom.xml b/Triangle.AbstractMachine.Disassembler/pom.xml
index 0b94ffb..847d0fc 100644
--- a/Triangle.AbstractMachine.Disassembler/pom.xml
+++ b/Triangle.AbstractMachine.Disassembler/pom.xml
@@ -1,9 +1,7 @@
 <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/maven-v4_0_0.xsd">
   <modelVersion>4.0.0</modelVersion>
-  <groupId>triangle.tools</groupId>
   <artifactId>triangle-disassembler</artifactId>
-  <version>2.1</version>
   <parent>
     <groupId>triangle.tools</groupId>
     <artifactId>triangle-tools</artifactId>
diff --git a/Triangle.AbstractMachine.Interpreter/pom.xml b/Triangle.AbstractMachine.Interpreter/pom.xml
index 70dc42c..551e835 100644
--- a/Triangle.AbstractMachine.Interpreter/pom.xml
+++ b/Triangle.AbstractMachine.Interpreter/pom.xml
@@ -1,9 +1,7 @@
 <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/maven-v4_0_0.xsd">
   <modelVersion>4.0.0</modelVersion>
-  <groupId>triangle.tools</groupId>
   <artifactId>triangle-interpreter</artifactId>
-  <version>2.1</version>
   <parent>
     <groupId>triangle.tools</groupId>
     <artifactId>triangle-tools</artifactId>
diff --git a/Triangle.AbstractMachine/pom.xml b/Triangle.AbstractMachine/pom.xml
index c2d2726..c7675fa 100644
--- a/Triangle.AbstractMachine/pom.xml
+++ b/Triangle.AbstractMachine/pom.xml
@@ -1,9 +1,7 @@
 <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/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>triangle.tools</groupId>
     <artifactId>triangle-abstractmachine</artifactId>
-    <version>2.1</version>
     <packaging>jar</packaging>
     <parent>
         <groupId>triangle.tools</groupId>
diff --git a/Triangle.Compiler/pom.xml b/Triangle.Compiler/pom.xml
index c0828ab..17b97da 100644
--- a/Triangle.Compiler/pom.xml
+++ b/Triangle.Compiler/pom.xml
@@ -1,9 +1,7 @@
 <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/maven-v4_0_0.xsd">
   <modelVersion>4.0.0</modelVersion>
-  <groupId>triangle.tools</groupId>
   <artifactId>triangle-compiler</artifactId>
-  <version>2.1</version>
   <parent>
     <groupId>triangle.tools</groupId>
     <artifactId>triangle-tools</artifactId>