diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 3305e8a..7365840 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -30,6 +30,11 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: '3.12'
+#      - name: find instances of msvcp140.dll
+#        working-directory: ${{ github.workspace }}
+#        run: |
+#          pip install pefile
+#          python scripts\find_library.py
       - name: build and install
         working-directory: ${{ github.workspace }}
         run: |
diff --git a/scripts/find_library.py b/scripts/find_library.py
new file mode 100644
index 0000000..3b08dc1
--- /dev/null
+++ b/scripts/find_library.py
@@ -0,0 +1,13 @@
+"""Find all instances of a given DLL in PATH and output information about
+each."""
+
+import os
+import pefile
+
+dll_name = 'msvcp140.dll'
+
+for d in os.environ['PATH'].split(os.pathsep):
+    if os.path.isfile(path := os.path.join(d, dll_name)):
+        print(path, end=': ')
+        with pefile.PE(path) as pe:
+            print((pe.OPTIONAL_HEADER.MajorLinkerVersion, pe.OPTIONAL_HEADER.MinorLinkerVersion))