diff --git a/python/1_2_Numbers_Strings.ipynb b/python/1_2_Numbers_Strings.ipynb
index b1a6d70..70d8b7e 100644
--- a/python/1_2_Numbers_Strings.ipynb
+++ b/python/1_2_Numbers_Strings.ipynb
@@ -4,7 +4,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "![](http://www.upm.es/sfs/Rectorado/Gabinete%20del%20Rector/Logos/UPM/EscPolitecnica/EscUpmPolit_p.gif \"UPM\")"
+    "![](https://github.com/gsi-upm/sitc/blob/9844820e6653b0e169113a06538f8e54554c4fbc/images/EscUpmPolit_p.gif?raw=true \"UPM\")"
    ]
   },
   {