diff --git a/book/schedules/phase1.ipynb b/book/schedules/phase1.ipynb
index 11a813e..c96619d 100644
--- a/book/schedules/phase1.ipynb
+++ b/book/schedules/phase1.ipynb
@@ -76,6 +76,10 @@
     "#### 4.1 Add everyone as admin on GitHub\n",
     "Collect usernames or email adresses\n",
     "\n",
+    "```{note}\n",
+    "Guus kan ook al bewerken!\n",
+    "```\n",
+    "\n",
     "#### 4.2 Give small instruction on GitHub collaboration\n",
     "\n",
     "### 5 Build Interactieve grafiek\n",