diff --git a/doc/source/conf.py b/doc/source/conf.py
index 37df17a..f31542d 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -11,7 +11,7 @@
 project = "xarray-ms"
 copyright = "2024, Simon Perkins"
 author = "Simon Perkins"
-release = "0.2.0"
+release = "0.1.9"
 
 # -- General configuration ---------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#general-configuration
diff --git a/pyproject.toml b/pyproject.toml
index d23a90f..9d2ccc7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "xarray-ms"
-version = "0.2.0"
+version = "0.1.9"
 description = "xarray MSv4 views over MSv2 Measurement Sets"
 authors = ["Simon Perkins <simon.perkins@gmail.com>"]
 readme = "README.rst"
@@ -49,3 +49,47 @@ extend-select = ["I"]
 [build-system]
 requires = ["poetry-core"]
 build-backend = "poetry.core.masonry.api"
+[tool.tbump]
+# Uncomment this if your project is hosted on GitHub:
+# github_url = "https://github.com/<user or organization>/<project>/"
+
+[tool.tbump.version]
+current = "0.1.9"
+
+# Example of a semver regexp.
+# Make sure this matches current_version before
+# using tbump
+regex = '''
+  (?P<major>\d+)
+  \.
+  (?P<minor>\d+)
+  \.
+  (?P<patch>\d+)
+  '''
+
+[tool.tbump.git]
+message_template = "Bump to {new_version}"
+tag_template = "{new_version}"
+
+# For each file to patch, add a [[tool.tbump.file]] config
+# section containing the path of the file, relative to the
+# tbump.toml location.
+[[tool.tbump.file]]
+src = "pyproject.toml"
+
+[[tool.tbump.file]]
+src = "doc/source/conf.py"
+
+# You can specify a list of commands to
+# run after the files have been patched
+# and before the git commit is made
+
+#  [[tool.tbump.before_commit]]
+#  name = "check changelog"
+#  cmd = "grep -q {new_version} Changelog.rst"
+
+# Or run some commands after the git tag and the branch
+# have been pushed:
+#  [[tool.tbump.after_push]]
+#  name = "publish"
+#  cmd = "./publish.sh"