diff --git a/var/spack/repos/builtin/packages/libgeotiff/package.py b/var/spack/repos/builtin/packages/libgeotiff/package.py
index 07c8d549744fd4da117aa67531e780d289965b35..c3a2e1913c70359bce58493b9d4a2813e9cc2f2e 100644
--- a/var/spack/repos/builtin/packages/libgeotiff/package.py
+++ b/var/spack/repos/builtin/packages/libgeotiff/package.py
@@ -13,7 +13,7 @@ class Libgeotiff(AutotoolsPackage):
     """
 
     homepage = "https://trac.osgeo.org/geotiff/"
-    url      = "http://download.osgeo.org/geotiff/libgeotiff/libgeotiff-1.5.1.tar.gz"
+    url      = "https://download.osgeo.org/geotiff/libgeotiff/libgeotiff-1.5.1.tar.gz"
 
     maintainers = ['adamjstewart']