diff --git a/README.md b/README.md
index b0ea1b062a9b60325497738263b50c240929e18f..df999620e83fd317279984e026c4d3493968761f 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# RelAST Preprocessor
+# RelAST Preprocessor Version 0.2.1
 
 ![RelAST process](relast-process.png)
 
diff --git a/src/main/java/org/jastadd/relast/compiler/Compiler.java b/src/main/java/org/jastadd/relast/compiler/Compiler.java
index 949cb2289fbad99fb5a2a61aec84fe94a5b88d4c..cfdfb473517ba71c2ea68b6eb233fda1a4e785a4 100644
--- a/src/main/java/org/jastadd/relast/compiler/Compiler.java
+++ b/src/main/java/org/jastadd/relast/compiler/Compiler.java
@@ -13,6 +13,9 @@ import java.util.Arrays;
 import java.util.List;
 
 public class Compiler {
+
+  private static final String VERSION = "0.2.1";
+
   private ArrayList<Option<?>> options;
   private FlagOption optionWriteToFile;
   private FlagOption optionPrintAST;
@@ -25,6 +28,7 @@ public class Compiler {
   private CommandLine commandLine;
 
   public Compiler(String[] args) throws CommandLineException {
+    System.out.println("Running RelAST " + VERSION);
     options = new ArrayList<>();
     addOptions();