diff --git a/pyproject.toml b/pyproject.toml
index eec4ddf..51b3528 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "pyoperon"
-version = "0.3.6"
+version = "0.4.0"
 authors = [
   { name = "Bogdan Burlacu", email="bogdan.burlacu@pm.me" },
 ]
diff --git a/setup.py b/setup.py
index 1002a88..796d224 100644
--- a/setup.py
+++ b/setup.py
@@ -9,7 +9,7 @@
 
 setup(
     name="pyoperon",
-    version="0.3.6",
+    version="0.4.0",
     description="python bindings for the operon library",
     author='Bogdan Burlacu',
     packages=['pyoperon'],