diff --git a/.gitignore b/.gitignore
index 5fe8770..8834265 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@ __pycache__
 .mypy_cache
 dist/
 riscemu.egg-info
+build/
diff --git a/riscemu/__init__.py b/riscemu/__init__.py
index 0e6d850..6e67892 100644
--- a/riscemu/__init__.py
+++ b/riscemu/__init__.py
@@ -25,4 +25,4 @@ from .parser import tokenize, parse_tokens, AssemblyFileLoader
 
 __author__ = "Anton Lydike <Anton@Lydike.com>"
 __copyright__ = "Copyright 2022 Anton Lydike"
-__version__ = '2.0.0a3'
+__version__ = '2.0.0a4'