diff --git a/Gemfile b/Gemfile
index e3d936d..3707bf4 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,4 @@
-source "http://rubygems.org"
+source "https://rubygems.org"
 
 # Specify your gem's dependencies in rack-parser.gemspec
 gemspec