diff --git a/CITATION.cff b/CITATION.cff
index acf4819..8553944 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -8,7 +8,7 @@ authors:
 - family-names: "Weissgraeber"
   given-names: "Philipp"
   orcid: "https://orcid.org/0000-0001-8320-8672"
-version: 3.1.7
+version: 3.1.9
 date-released: 2021-12-30
 identifiers:
   - description: Collection of archived snapshots of all versions of WEAC
diff --git a/demo/demo.ipynb b/demo/demo.ipynb
index 928a2da..6e21b9f 100644
--- a/demo/demo.ipynb
+++ b/demo/demo.ipynb
@@ -13,7 +13,7 @@
    "id": "695bafcb",
    "metadata": {},
    "source": [
-    "Note that instructions in this notebook refer to **release v3.1.7.** Please make sure you are running the latest version of weac using\n",
+    "Note that instructions in this notebook refer to **release v3.1.9.** Please make sure you are running the latest version of weac using\n",
     "\n",
     "```bash\n",
     "pip install -U weac\n",
diff --git a/pyproject.toml b/pyproject.toml
index 99f87d8..80539db 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "weac"
-version = "3.1.7"
+version = "3.1.9"
 authors = [{ name = "2phi GbR", email = "mail@2phi.de" }]
 description = "Weak layer anticrack nucleation model"
 readme = "README.md"
@@ -126,7 +126,7 @@ ignore = [
 ]
 
 [tool.bumpversion]
-current_version = "3.1.7"
+current_version = "3.1.9"
 
 [[tool.bumpversion.files]]
 filename = "pyproject.toml"
diff --git a/src/weac/__init__.py b/src/weac/__init__.py
index 57e4195..e7d8330 100644
--- a/src/weac/__init__.py
+++ b/src/weac/__init__.py
@@ -2,4 +2,4 @@
 WEAC - Weak Layer Anticrack Nucleation Model
 """
 
-__version__ = "3.1.7"
+__version__ = "3.1.9"
diff --git a/uv.lock b/uv.lock
index 465f41c..9c130b2 100644
--- a/uv.lock
+++ b/uv.lock
@@ -2775,7 +2775,7 @@ wheels = [
 
 [[package]]
 name = "weac"
-version = "3.1.7"
+version = "3.1.9"
 source = { editable = "." }
 dependencies = [
     { name = "matplotlib" },