diff --git a/pyproject.toml b/pyproject.toml
index afbf165..e7766b7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,5 @@
 [project]
-version = "0.0.2"
+version = "1.0.0"
 requires-python = ">= 3.8"
 name = "pysphereproj"
 dependencies = [
diff --git a/src/sphereproj/__init__.py b/src/sphereproj/__init__.py
index 249720a..2cf1ac8 100644
--- a/src/sphereproj/__init__.py
+++ b/src/sphereproj/__init__.py
@@ -1,3 +1,3 @@
 from ._project import spherical_projection, project_cic, interp3d
 
-__version__ = "1.0"
+__version__ = "1.0.0"