diff --git a/pyproject.toml b/pyproject.toml
index 59be2ce..b3eb42f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "pmotools"
-version = "0.1.0"
+version = "v1.0.0"
 description = "Tools for building and analyzing PMO files"
 readme = "README.md"
 authors = [
diff --git a/tests/test_pmo_builder/test_merge_to_pmo.py b/tests/test_pmo_builder/test_merge_to_pmo.py
index b70017e..7f8b981 100644
--- a/tests/test_pmo_builder/test_merge_to_pmo.py
+++ b/tests/test_pmo_builder/test_merge_to_pmo.py
@@ -16,11 +16,11 @@ class TestMergeToPMO(unittest.TestCase):
     def setUp(self):
         self.ref_list = [{"name": "name1"}, {"name": "name2"}, {"name": "name3"}]
         self.pmo_header = {
-            "pmo_version": "0.1.0",
+            "pmo_version": "1.0.0",
             "creation_date": "2025-07-22",
             "generation_method": {
                 "program_name": "pmotools-python",
-                "program_version": "0.1.0",
+                "program_version": "1.0.0",
             },
         }
 
diff --git a/uv.lock b/uv.lock
index 8c809d2..f33eb44 100644
--- a/uv.lock
+++ b/uv.lock
@@ -264,7 +264,7 @@ wheels = [
 
 [[package]]
 name = "pmotools"
-version = "0.1.0"
+version = "1.0.0"
 source = { editable = "." }
 dependencies = [
     { name = "biopython" },