diff --git a/.github/workflows/login-toml.yaml b/.github/workflows/login-toml.yaml
new file mode 100644
index 00000000..873970a3
--- /dev/null
+++ b/.github/workflows/login-toml.yaml
@@ -0,0 +1,6 @@
+- name: Prevent modifying login.toml
+  uses: xalvarez/prevent-file-change-action@v1.6.0
+  with:
+    githubToken: ${{ secrets.GITHUB_TOKEN }}
+    pattern: login.toml
+