diff --git a/anaconda_build/meta.yaml b/anaconda_build/meta.yaml
index 2111d52..f12e82f 100644
--- a/anaconda_build/meta.yaml
+++ b/anaconda_build/meta.yaml
@@ -1,6 +1,6 @@
 package:
   name: openprotein-python
-  version: "0.4.0"
+  version: "0.4.1"
 
 source:
   path: ../
diff --git a/pyproject.toml b/pyproject.toml
index a7324d4..aba0058 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 [tool.poetry]
 name = "openprotein_python"
 packages = [{include = "openprotein"}]
-version = "0.4.0"
+version = "0.4.1"
 description = "OpenProtein Python interface."
 license = "MIT"
 readme = "README.md"