diff --git a/includes/WPStrava/Activity.php b/includes/WPStrava/Activity.php
index 086fea4..32f7d1b 100755
--- a/includes/WPStrava/Activity.php
+++ b/includes/WPStrava/Activity.php
@@ -4,8 +4,8 @@
  */
 class WPStrava_Activity {
 
-	const ACTIVITIES_URL = 'http://strava.com/activities/';
-	const ATHLETES_URL   = 'http://strava.com/athletes/';
+	const ACTIVITIES_URL = 'https://strava.com/activities/';
+	const ATHLETES_URL   = 'https://strava.com/athletes/';
 
 	/**
 	 * Get single activity by ID.
diff --git a/includes/WPStrava/Routes.php b/includes/WPStrava/Routes.php
index 7ac9abe..7329084 100644
--- a/includes/WPStrava/Routes.php
+++ b/includes/WPStrava/Routes.php
@@ -7,7 +7,7 @@
  * @since 1.3.0
  */
 class WPStrava_Routes {
-	const ROUTES_URL = 'http://strava.com/routes/';
+	const ROUTES_URL = 'https://strava.com/routes/';
 
 	/**
 	 * Get single route by ID.