diff --git a/README.md b/README.md
index 659c989d7dd54f3a149c624a2080a51de908f78e..d4bc666e28d6820d98c28d5d4b3c282bd1b17e73 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 # DR1 tutorials
 
-[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/git/https%3A%2F%2Fgloton.ugr.es%2Fgitlab%2Fcavity%2Fdr1-tutorials)
+[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/git/https%3A%2F%2Fgloton.ugr.es%2Fgitlab%2Fcavity%2Fdr1-tutorials/HEAD)
 
 This repository contains basic tutorials showing the CAVITY TAP service functionalities.
\ No newline at end of file
diff --git a/notebooks/tutorial_DR1.ipynb b/notebooks/tutorial_DR1.ipynb
index d1438f1aafc65f6f6cf8fec04d0f2bd33f0fc947..d7295965519a5d419f681f9a6de00071c96b911a 100644
--- a/notebooks/tutorial_DR1.ipynb
+++ b/notebooks/tutorial_DR1.ipynb
@@ -37,7 +37,7 @@
    "outputs": [],
    "source": [
     "url = \"https://cavity.caha.es/tap\"\n",
-    "token = 'cf16899d345b765aba64b63ec0a92700a00beb36'"
+    "token = ''"
    ]
   },
   {
@@ -56,8 +56,10 @@
    ],
    "source": [
     "# Setup authorization\n",
-    "tap_session = requests.Session()\n",
-    "tap_session.headers['Authorization'] = f'Token {token}'\n",
+    "tap_session = None\n",
+    "if len(token)>0:\n",
+    "    tap_session = requests.Session()\n",
+    "    tap_session.headers['Authorization'] = f'Token {token}'\n",
     "\n",
     "# Init service\n",
     "tap_service = pyvo.dal.TAPService(url, session=tap_session)\n",
diff --git a/notebooks/tutorial_DR1_xmatch.ipynb b/notebooks/tutorial_DR1_xmatch.ipynb
index 4c50d9c75363163c3e7ed3ce025f2c6bf8d4e285..172c56b3d32f723999d3a09c73d026e2445a2308 100644
--- a/notebooks/tutorial_DR1_xmatch.ipynb
+++ b/notebooks/tutorial_DR1_xmatch.ipynb
@@ -41,7 +41,7 @@
    "outputs": [],
    "source": [
     "url = \"https://cavity.caha.es/tap\"\n",
-    "token = 'cf16899d345b765aba64b63ec0a92700a00beb36'"
+    "token = ''"
    ]
   },
   {
@@ -60,8 +60,10 @@
    ],
    "source": [
     "# Setup authorization\n",
-    "tap_session = requests.Session()\n",
-    "tap_session.headers['Authorization'] = f'Token {token}'\n",
+    "tap_session = None\n",
+    "if len(token)>0:\n",
+    "    tap_session = requests.Session()\n",
+    "    tap_session.headers['Authorization'] = f'Token {token}'\n",
     "\n",
     "# Init service\n",
     "tap_service = pyvo.dal.TAPService(url, session=tap_session)\n",