diff --git a/.all-contributorsrc b/.all-contributorsrc
index d1c8a977..218cb7e1 100644
--- a/.all-contributorsrc
+++ b/.all-contributorsrc
@@ -524,6 +524,15 @@
       "contributions": [
         "doc"
       ]
+    },
+    {
+      "login": "icemac",
+      "name": "Michael Howitz",
+      "avatar_url": "https://avatars.githubusercontent.com/u/386619?v=4",
+      "profile": "https://minddistrict.de",
+      "contributions": [
+        "doc"
+      ]
     }
   ],
   "contributorsPerLine": 7,
diff --git a/README.md b/README.md
index 2744de72..e32bc3f3 100644
--- a/README.md
+++ b/README.md
@@ -206,6 +206,8 @@ Some users reported that they were getting an error:
 
 If you're getting this error and you're using `actions/checkout@v1`, try upgrading to `actions/checkout@v2`. If you're still having problems after upgrading, feel free to open an issue. Issue ref: [#146](https://github.com/EndBug/add-and-commit/issues/146)
 
+Please note that using `persist-credentials: false` will lead to the same issue.
+
 ### Performance on large repos
 
 By default, the action will fetch the repository before starting to work on it: this ensures that it can see the already existing refs.  
@@ -428,6 +430,9 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
       <td align="center" valign="top" width="14.28%"><a href="http://droettboom.com"><img src="https://avatars.githubusercontent.com/u/38294?v=4?s=100" width="100px;" alt="Michael Droettboom"/><br /><sub><b>Michael Droettboom</b></sub></a><br /><a href="#maintenance-mdboom" title="Maintenance">🚧</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/tommie"><img src="https://avatars.githubusercontent.com/u/216382?v=4?s=100" width="100px;" alt="tommie"/><br /><sub><b>tommie</b></sub></a><br /><a href="https://github.com/EndBug/add-and-commit/commits?author=tommie" title="Documentation">📖</a></td>
     </tr>
+    <tr>
+      <td align="center" valign="top" width="14.28%"><a href="https://minddistrict.de"><img src="https://avatars.githubusercontent.com/u/386619?v=4?s=100" width="100px;" alt="Michael Howitz"/><br /><sub><b>Michael Howitz</b></sub></a><br /><a href="https://github.com/EndBug/add-and-commit/commits?author=icemac" title="Documentation">📖</a></td>
+    </tr>
   </tbody>
 </table>