diff --git a/CITATION.cff b/CITATION.cff
index 89c6457..0894f65 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -13,4 +13,4 @@ license: MIT
 repository-code: https://github.com/scientificcomputing/scifem/tree/v0.16.1
 title: "scientificcomputing/scifem: v0.16.1"
 type: software
-version: v0.18.0
+version: v0.18.1
diff --git a/pyproject.toml b/pyproject.toml
index 756a5c6..fec027b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,7 +10,7 @@ build-backend = "scikit_build_core.build"
 
 [project]
 name = "scifem"
-version = "0.18.0"
+version = "0.18.1"
 description = "Scientific tools for finite element methods"
 readme = "README.md"
 requires-python = ">=3.10"
@@ -19,7 +19,7 @@ authors = [
     { email = "dokken@simula.no", name = "Jørgen S. Dokken" },
     { email = "henriknf@simula.no", name = "Henrik N.T. Finsberg" },
 ]
-dependencies = ["fenics-dolfinx", "numpy", "packaging"]
+dependencies = ["fenics-dolfinx", "numpy", "packaging", "scipy"]
 
 [project.urls]
 repository = "https://github.com/scientificcomputing/scifem.git"
@@ -138,7 +138,7 @@ tag = true
 sign_tags = false
 tag_name = "v{new_version}"
 tag_message = "Bump version: {current_version} → {new_version}"
-current_version = "0.18.0"
+current_version = "0.18.1"
 
 
 [[tool.bumpversion.files]]