diff --git a/README b/README
index 56be5c7..3fa7dbc 100644
--- a/README
+++ b/README
@@ -50,7 +50,7 @@
 
 3. Download
 
-    Find the latest release tarball at http://tio.github.io
+    Find the latest release tarball at https://tio.github.io
 
     The latest source is available on github: https://github.com/tio/tio
 
diff --git a/configure.ac b/configure.ac
index d78a903..ae286b5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 AC_PREREQ([2.68])
-AC_INIT([tio], [1.7], [], [tio], [http://tio.github.io])
+AC_INIT([tio], [1.7], [], [tio], [https://tio.github.io])
 AC_CONFIG_HEADERS([src/include/config.h])
 AM_INIT_AUTOMAKE([1.11 foreign dist-xz no-dist-gzip -Wall -Werror])
 AM_SILENT_RULES([yes])