diff --git a/CHANGELOG.md b/CHANGELOG.md
index 25cd921..35738c8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [0.5.0 - Unreleased]
 
 
+## [0.4.1]
+
+### Changed
+- add default values for `categorized_package_data` to avoid crash on packages not available on pypi
+
 ## [0.4.0]
 
 ### Added
@@ -53,6 +58,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Initial Release
 
 [0.5.0 - Unreleased]: https://github.com/nezhar/updatable
+[0.4.1]: https://pypi.org/project/updatable/0.4.1/
 [0.4.0]: https://pypi.org/project/updatable/0.4.0/
 [0.3.1]: https://pypi.org/project/updatable/0.3.1/
 [0.3.0]: https://pypi.org/project/updatable/0.3.0/
diff --git a/updatable/__version__.py b/updatable/__version__.py
index 588460d..9999d3b 100644
--- a/updatable/__version__.py
+++ b/updatable/__version__.py
@@ -1,2 +1,2 @@
 # -*- coding: utf-8 -*-
-__version__ = "0.5.0"
+__version__ = "0.4.1"
diff --git a/updatable/utils.py b/updatable/utils.py
index 1ea1ed5..5dbe81a 100644
--- a/updatable/utils.py
+++ b/updatable/utils.py
@@ -237,7 +237,13 @@ def get_package_update_list(package_name, version):
     # Information about packages
     newer_releases = 0
     pre_releases = 0
-    categorized_package_data = {}
+    categorized_package_data = {
+        'major_updates': [],
+        'minor_updates': [],
+        'patch_updates': [],
+        'pre_release_updates': [],
+        'non_semantic_versions': [],
+    }
 
     if package_data:
         latest_release = package_data['info']['version']