diff --git a/src/FurryBear/Provider/Source/SunlightOpenStates.php b/src/FurryBear/Provider/Source/SunlightOpenStates.php
index c7dc959..07c2224 100644
--- a/src/FurryBear/Provider/Source/SunlightOpenStates.php
+++ b/src/FurryBear/Provider/Source/SunlightOpenStates.php
@@ -31,7 +31,7 @@ class SunlightOpenStates extends AbstractProvider
     /**
      * The domain of the API.
      */
-    const SERVICE_URL = 'http://openstates.org/api/v1';
+    const SERVICE_URL = 'https://openstates.org/api/v1';
     
     /**
      * The resource directory.
@@ -98,4 +98,4 @@ public function getDirectory()
     {
         return self::RESOURCE_DIR;
     }
-}
\ No newline at end of file
+}