diff --git a/matadi/__about__.py b/matadi/__about__.py
index 9cb17e7..c11f861 100644
--- a/matadi/__about__.py
+++ b/matadi/__about__.py
@@ -1 +1 @@
-__version__ = "0.1.8"
+__version__ = "0.1.9"
diff --git a/pyproject.toml b/pyproject.toml
index 632fa21..e2b8160 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "matadi"
-version = "0.1.8"
+version = "0.1.9"
 description = "Material Definition with Automatic Differentiation"
 readme = "README.md"
 requires-python = ">=3.6"
diff --git a/setup.cfg b/setup.cfg
index 4cd3d8d..c3a535b 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = matadi
-version = 0.1.8
+version = 0.1.9
 author = Andreas Dutzler
 author_email = a.dutzler@gmail.com
 description = Material Definition with Automatic Differentiation