diff --git a/docs/source/conf.py b/docs/source/conf.py
index ba1c03e..61ca894 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -5,7 +5,7 @@
 author = "Timothy Nunn"
 
 # The full version, including alpha/beta/rc tags
-release = "2.2.0"
+release = "2.2.1"
 
 
 # -- General configuration ---------------------------------------------------
diff --git a/pyproject.toml b/pyproject.toml
index 499243a..017b460 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,14 +3,14 @@ requires = ["setuptools", "wheel"]
 
 [project]
 name = "PyVMCON"
-version = "2.2.0"
+version = "2.2.1"
 description = "Python implementation of the VMCON non-linear constrained optimiser."
 keywords = ["vmcon", "optimisation", "non-linear constrained optimisation"]
 readme = "README.md"
 license = { file = "LICENSE" }
 authors = [{ name = "Timothy Nunn", email = "timothy.nunn@ukaea.uk" }]
 requires-python = ">=3.8"
-dependencies = ["numpy>=1.19", "cvxpy>=1.3"]
+dependencies = ["numpy>=1.19,<2.0", "cvxpy>=1.5.2"]
 classifiers = [
     "Intended Audience :: Science/Research",
     "License :: OSI Approved :: MIT License",