diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index faabbda..9063a62 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -1,3 +1,9 @@
+## v1.0.0 (2024-04-21)
+
+### Feat
+
+- Mark modules as internal (#18)
+
 ## v0.3.0 (2024-03-10)
 
 ### Feat
diff --git a/pyproject.toml b/pyproject.toml
index 521e925..d6e53a8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,5 @@
 [tool.commitizen]
-version = "0.3.0"
+version = "1.0.0"
 name = "cz_conventional_commits"
 tag_format = "v$version"
 version_files = [
@@ -11,7 +11,7 @@ changelog_file = "docs/CHANGELOG.md"
 
 [tool.poetry]
 name = "pit-viper"
-version = "0.3.0"
+version = "1.0.0"
 description = "Pit-Viper is a Python package that offers configuration management capabilities like the Viper package in Golang."
 authors = ["Leo Schleier <43878374+leoschleier@users.noreply.github.com>"]
 license = "MIT"
diff --git a/src/pit/viper/__version__.py b/src/pit/viper/__version__.py
index d9120c7..4b86e4e 100644
--- a/src/pit/viper/__version__.py
+++ b/src/pit/viper/__version__.py
@@ -1,2 +1,2 @@
 """Version information for pit-viper."""
-__version__ = "0.3.0"
+__version__ = "1.0.0"