diff --git a/Gemfile b/Gemfile
index 28e1a33..14f39bb 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,4 @@
-source "http://rubygems.org"
+source "https://rubygems.org"
 
 # Specify your gem's dependencies in pry-rails.gemspec
 gemspec
diff --git a/scenarios/rails30.gemfile b/scenarios/rails30.gemfile
index 7444abb..6aa3ec6 100644
--- a/scenarios/rails30.gemfile
+++ b/scenarios/rails30.gemfile
@@ -1,4 +1,4 @@
-source "http://rubygems.org"
+source "https://rubygems.org"
 
 gem "rails", "~> 3.0.0"
 gem "sqlite3"
diff --git a/scenarios/rails31.gemfile b/scenarios/rails31.gemfile
index 43c7820..30f698e 100644
--- a/scenarios/rails31.gemfile
+++ b/scenarios/rails31.gemfile
@@ -1,4 +1,4 @@
-source "http://rubygems.org"
+source "https://rubygems.org"
 
 gem "rails", "~> 3.1.0"
 gem "mongoid"
diff --git a/scenarios/rails32.gemfile b/scenarios/rails32.gemfile
index 5488d16..d76cc00 100644
--- a/scenarios/rails32.gemfile
+++ b/scenarios/rails32.gemfile
@@ -1,4 +1,4 @@
-source "http://rubygems.org"
+source "https://rubygems.org"
 
 gem "rails", "~> 3.2.0"
 gem "mongoid"
diff --git a/scenarios/rails40.gemfile b/scenarios/rails40.gemfile
index 2f4b477..076600b 100644
--- a/scenarios/rails40.gemfile
+++ b/scenarios/rails40.gemfile
@@ -1,4 +1,4 @@
-source "http://rubygems.org"
+source "https://rubygems.org"
 
 gem "rails", "~> 4.0.0"
 gem "sqlite3"
diff --git a/scenarios/rails41.gemfile b/scenarios/rails41.gemfile
index 001966c..3d146f9 100644
--- a/scenarios/rails41.gemfile
+++ b/scenarios/rails41.gemfile
@@ -1,4 +1,4 @@
-source "http://rubygems.org"
+source "https://rubygems.org"
 
 gem "rails", "~> 4.1.0"
 gem "mongoid"
diff --git a/scenarios/rails42.gemfile b/scenarios/rails42.gemfile
index a66961e..dc4d5d2 100644
--- a/scenarios/rails42.gemfile
+++ b/scenarios/rails42.gemfile
@@ -1,4 +1,4 @@
-source "http://rubygems.org"
+source "https://rubygems.org"
 
 gem "rails", "~> 4.2.0"
 gem "mongoid"
diff --git a/scenarios/rails50.gemfile b/scenarios/rails50.gemfile
index 79a5069..7ba9409 100644
--- a/scenarios/rails50.gemfile
+++ b/scenarios/rails50.gemfile
@@ -1,4 +1,4 @@
-source "http://rubygems.org"
+source "https://rubygems.org"
 
 gem "rails", "~> 5.0.0"
 gem "mongoid"
diff --git a/scenarios/rails51.gemfile b/scenarios/rails51.gemfile
index e67d1dc..139cbca 100644
--- a/scenarios/rails51.gemfile
+++ b/scenarios/rails51.gemfile
@@ -1,4 +1,4 @@
-source "http://rubygems.org"
+source "https://rubygems.org"
 
 gem "rails", "~> 5.1.0"
 gem "mongoid"