diff --git a/sources/source_url b/sources/source_url
index ffbcf67..2e3ead6 100644
--- a/sources/source_url
+++ b/sources/source_url
@@ -1 +1 @@
-http://files.spip.org/spip/stable/spip-3.1.zip
\ No newline at end of file
+https://files.spip.org/spip/stable/spip-3.1.zip
\ No newline at end of file