diff --git a/debian/changelog b/debian/changelog
index 7378a3f8..6a8c789d 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+llvm-toolchain-9 (1:9.0.1~+rc2-1~exp2) UNRELEASED; urgency=medium
+
+  * Use secure URI in debian/watch.
+
+ -- Sylvestre Ledru <sylvestre@debian.org>  Sun, 08 Dec 2019 21:02:49 +0100
+
 llvm-toolchain-9 (1:9.0.1~+rc2-1~exp1) experimental; urgency=medium
 
   * New snapshot release
diff --git a/debian/watch b/debian/watch
index a372a166..a6d1751f 100644
--- a/debian/watch
+++ b/debian/watch
@@ -1,3 +1,3 @@
 version=3
-http://llvm.org/releases/download.html .*/llvm-([\d\.\-]+).src.tar.xz
+https://llvm.org/releases/download.html .*/llvm-([\d\.\-]+).src.tar.xz