diff --git a/conda_lock/_vendor/cleo.LICENSE b/conda_lock/_vendor/cleo.LICENSE
index 3f0aed7f..50b623f8 100644
--- a/conda_lock/_vendor/cleo.LICENSE
+++ b/conda_lock/_vendor/cleo.LICENSE
@@ -17,4 +17,4 @@ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
\ No newline at end of file
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/conda_lock/_vendor/cleo.pyi b/conda_lock/_vendor/cleo.pyi
deleted file mode 100644
index da1bd180..00000000
--- a/conda_lock/_vendor/cleo.pyi
+++ /dev/null
@@ -1 +0,0 @@
-from cleo import *
\ No newline at end of file
diff --git a/conda_lock/scripts/vendor_poetry/rerun_vendoring.sh b/conda_lock/scripts/vendor_poetry/rerun_vendoring.sh
new file mode 100755
index 00000000..8863088a
--- /dev/null
+++ b/conda_lock/scripts/vendor_poetry/rerun_vendoring.sh
@@ -0,0 +1,44 @@
+#!/bin/bash
+
+set -euo pipefail
+
+if ! command -v vendoring &> /dev/null; then
+  echo "vendoring not found on PATH. Please install vendoring with 'pip install vendoring'."
+  exit 1
+fi
+
+if ! command -v dos2unix &> /dev/null; then
+  echo "dos2unix not found on PATH. Please install dos2unix with 'apt-get install dos2unix' or 'brew install dos2unix'."
+  exit 1
+fi
+
+if [ ! -f pyproject.toml ]; then
+  echo "pyproject.toml not found in the current directory. Please run this script from the root of the project:"
+  echo "  conda_lock/scripts/vendor_poetry/rerun_vendoring.sh"
+  exit 1
+fi
+
+vendoring sync -vvv .
+
+echo Fixing CRLF line endings...
+dos2unix conda_lock/_vendor/poetry/core/_vendor/lark/grammars/*
+dos2unix conda_lock/_vendor/poetry/core/_vendor/fastjsonschema/*
+dos2unix conda_lock/_vendor/conda/_vendor/boltons/LICENSE
+dos2unix conda_lock/_vendor/poetry/core/_vendor/lark/LICENSE
+
+echo Downloading missing licenses...
+for package in poetry poetry-core cleo; do
+  curl -s "https://raw.githubusercontent.com/python-poetry/${package}/master/LICENSE" > "conda_lock/_vendor/${package}.LICENSE"
+done
+
+echo Removing duplicate licenses...
+# This one is actually correct, but we downloaded it to poetry-core.LICENSE above.
+diff conda_lock/_vendor/poetry_core.LICENSE conda_lock/_vendor/poetry-core.LICENSE
+rm conda_lock/_vendor/poetry-core.LICENSE
+# These are licenses for poetry_core's vendored 'packaging', not poetry_core itself.
+diff conda_lock/_vendor/poetry/core/_vendor/packaging/LICENSE.APACHE conda_lock/_vendor/poetry_core.LICENSE.APACHE
+diff conda_lock/_vendor/poetry/core/_vendor/packaging/LICENSE.BSD conda_lock/_vendor/poetry_core.LICENSE.BSD
+rm conda_lock/_vendor/poetry_core.LICENSE.APACHE
+rm conda_lock/_vendor/poetry_core.LICENSE.BSD
+
+echo "Vendoring complete. Please commit the changes."