diff --git a/Gemfile b/Gemfile
index a11bf4e3..7f26f81e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,4 @@
-source "http://rubygems.org"
+source "https://rubygems.org"
 
 # Specify your gem's dependencies in bitcoin-ruby.gemspec
 gemspec
diff --git a/Gemfile.lock b/Gemfile.lock
index 63e408f1..fb9c7773 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -4,7 +4,7 @@ PATH
     bitcoin-ruby (0.0.8)
 
 GEM
-  remote: http://rubygems.org/
+  remote: https://rubygems.org/
   specs:
     bacon (1.2.0)
     eventmachine (1.0.7)
@@ -31,4 +31,4 @@ DEPENDENCIES
   scrypt
 
 BUNDLED WITH
-   1.10.5
+   1.10.6