diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 47588e4..97b8c6a 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0, 2, 1, 'alpha', 2
+current_version = 0, 2, 1, 'alpha', 3
 commit = True
 tag = False
 parse = (?P<major>\d+)\,\ (?P<minor>\d+)\,\ (?P<patch>\d+)\,\ \'(?P<release>\S+)\'\,\ (?P<build>\d+)
diff --git a/MANIFEST.in b/MANIFEST.in
index bdfcb52..d3479b7 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -6,7 +6,7 @@ include LICENSE
 include CONTRIBUTING.md
 
 # inclusion in sdist varies somewhat between python tools
-pyproject.toml
+include pyproject.toml
 
 # test data
 include nbcelltests/tests/*.ipynb
diff --git a/js/package.json b/js/package.json
index 426b349..4443332 100644
--- a/js/package.json
+++ b/js/package.json
@@ -1,6 +1,6 @@
 {
   "name": "jupyterlab_celltests",
-  "version": "0.2.1-alpha.2",
+  "version": "0.2.1-alpha.3",
   "description": "A JupyterLab extension for cell-by-cell testing and linting of notebooks.",
   "author": "The nbcelltests authors",
   "main": "lib/index.js",
diff --git a/nbcelltests/_version.py b/nbcelltests/_version.py
index 7c81e37..1900396 100644
--- a/nbcelltests/_version.py
+++ b/nbcelltests/_version.py
@@ -12,7 +12,7 @@
 ])
 
 # DO NOT EDIT THIS DIRECTLY!  It is managed by bumpversion
-version_info = VersionInfo(0, 2, 1, 'alpha', 2)
+version_info = VersionInfo(0, 2, 1, 'alpha', 3)
 
 _specifier_ = {'alpha': 'a', 'beta': 'b', 'candidate': 'rc', 'final': ''}