diff --git a/lib/skyfall/car_archive.rb b/lib/skyfall/car_archive.rb
index b2282a7..d05fd8a 100644
--- a/lib/skyfall/car_archive.rb
+++ b/lib/skyfall/car_archive.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative 'cid'
 require_relative 'errors'
 require_relative 'extensions'
diff --git a/lib/skyfall/cid.rb b/lib/skyfall/cid.rb
index e16d075..ae62ca8 100644
--- a/lib/skyfall/cid.rb
+++ b/lib/skyfall/cid.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative 'errors'
 
 require 'base32'
diff --git a/lib/skyfall/collection.rb b/lib/skyfall/collection.rb
index e035983..bfe7657 100644
--- a/lib/skyfall/collection.rb
+++ b/lib/skyfall/collection.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Skyfall
 
   #
diff --git a/lib/skyfall/errors.rb b/lib/skyfall/errors.rb
index 3e7a328..1e8f24b 100644
--- a/lib/skyfall/errors.rb
+++ b/lib/skyfall/errors.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Skyfall
   #
   # Wrapper base class for Skyfall error classes.
diff --git a/lib/skyfall/events.rb b/lib/skyfall/events.rb
index 274d035..dcbb8bd 100644
--- a/lib/skyfall/events.rb
+++ b/lib/skyfall/events.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Skyfall
 
   # @private
diff --git a/lib/skyfall/extensions.rb b/lib/skyfall/extensions.rb
index dc40234..6b89e4d 100644
--- a/lib/skyfall/extensions.rb
+++ b/lib/skyfall/extensions.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'cbor'
 require 'stringio'
 
diff --git a/lib/skyfall/firehose.rb b/lib/skyfall/firehose.rb
index 9c5d52b..e233fb9 100644
--- a/lib/skyfall/firehose.rb
+++ b/lib/skyfall/firehose.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative 'stream'
 require 'uri'
 
diff --git a/lib/skyfall/firehose/account_message.rb b/lib/skyfall/firehose/account_message.rb
index 03fcd9a..e63a8dc 100644
--- a/lib/skyfall/firehose/account_message.rb
+++ b/lib/skyfall/firehose/account_message.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative '../firehose'
 require_relative 'message'
 
diff --git a/lib/skyfall/firehose/commit_message.rb b/lib/skyfall/firehose/commit_message.rb
index 4a503bb..9eca292 100644
--- a/lib/skyfall/firehose/commit_message.rb
+++ b/lib/skyfall/firehose/commit_message.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative '../car_archive'
 require_relative '../cid'
 require_relative '../firehose'
diff --git a/lib/skyfall/firehose/identity_message.rb b/lib/skyfall/firehose/identity_message.rb
index 22e5b3e..6bafcdd 100644
--- a/lib/skyfall/firehose/identity_message.rb
+++ b/lib/skyfall/firehose/identity_message.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative '../firehose'
 require_relative 'message'
 
diff --git a/lib/skyfall/firehose/info_message.rb b/lib/skyfall/firehose/info_message.rb
index a855c87..3f59673 100644
--- a/lib/skyfall/firehose/info_message.rb
+++ b/lib/skyfall/firehose/info_message.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative '../firehose'
 require_relative 'message'
 
diff --git a/lib/skyfall/firehose/labels_message.rb b/lib/skyfall/firehose/labels_message.rb
index 6c98dfe..9c5bf74 100644
--- a/lib/skyfall/firehose/labels_message.rb
+++ b/lib/skyfall/firehose/labels_message.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative '../firehose'
 require_relative '../label'
 require_relative 'message'
diff --git a/lib/skyfall/firehose/message.rb b/lib/skyfall/firehose/message.rb
index 2d89c9a..27ab951 100644
--- a/lib/skyfall/firehose/message.rb
+++ b/lib/skyfall/firehose/message.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative '../errors'
 require_relative '../extensions'
 require_relative '../firehose'
diff --git a/lib/skyfall/firehose/operation.rb b/lib/skyfall/firehose/operation.rb
index 02c4e00..5d0452f 100644
--- a/lib/skyfall/firehose/operation.rb
+++ b/lib/skyfall/firehose/operation.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative '../collection'
 require_relative '../firehose'
 
diff --git a/lib/skyfall/firehose/sync_message.rb b/lib/skyfall/firehose/sync_message.rb
index 8af3c9b..d413c0c 100644
--- a/lib/skyfall/firehose/sync_message.rb
+++ b/lib/skyfall/firehose/sync_message.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative '../firehose'
 require_relative 'message'
 
diff --git a/lib/skyfall/firehose/unknown_message.rb b/lib/skyfall/firehose/unknown_message.rb
index cd6c259..6174aa9 100644
--- a/lib/skyfall/firehose/unknown_message.rb
+++ b/lib/skyfall/firehose/unknown_message.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative '../firehose'
 require_relative 'message'
 
diff --git a/lib/skyfall/jetstream.rb b/lib/skyfall/jetstream.rb
index d181a4a..fb59dcd 100644
--- a/lib/skyfall/jetstream.rb
+++ b/lib/skyfall/jetstream.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative 'stream'
 
 require 'json'
diff --git a/lib/skyfall/jetstream/account_message.rb b/lib/skyfall/jetstream/account_message.rb
index 54a96dc..90891c5 100644
--- a/lib/skyfall/jetstream/account_message.rb
+++ b/lib/skyfall/jetstream/account_message.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative '../errors'
 require_relative '../jetstream'
 require_relative 'message'
diff --git a/lib/skyfall/jetstream/commit_message.rb b/lib/skyfall/jetstream/commit_message.rb
index e9597b0..cdae651 100644
--- a/lib/skyfall/jetstream/commit_message.rb
+++ b/lib/skyfall/jetstream/commit_message.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative '../errors'
 require_relative '../jetstream'
 require_relative 'message'
diff --git a/lib/skyfall/jetstream/identity_message.rb b/lib/skyfall/jetstream/identity_message.rb
index ae9c9e9..8417e5c 100644
--- a/lib/skyfall/jetstream/identity_message.rb
+++ b/lib/skyfall/jetstream/identity_message.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative '../errors'
 require_relative '../jetstream'
 require_relative 'message'
diff --git a/lib/skyfall/jetstream/message.rb b/lib/skyfall/jetstream/message.rb
index cdce56f..205780a 100644
--- a/lib/skyfall/jetstream/message.rb
+++ b/lib/skyfall/jetstream/message.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative '../errors'
 require_relative '../jetstream'
 
diff --git a/lib/skyfall/jetstream/operation.rb b/lib/skyfall/jetstream/operation.rb
index 580c30c..8c0caea 100644
--- a/lib/skyfall/jetstream/operation.rb
+++ b/lib/skyfall/jetstream/operation.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative '../collection'
 require_relative '../jetstream'
 
diff --git a/lib/skyfall/jetstream/unknown_message.rb b/lib/skyfall/jetstream/unknown_message.rb
index 5c74073..d86a8c4 100644
--- a/lib/skyfall/jetstream/unknown_message.rb
+++ b/lib/skyfall/jetstream/unknown_message.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative '../jetstream'
 require_relative 'message'
 
diff --git a/lib/skyfall/label.rb b/lib/skyfall/label.rb
index 3e6844d..ac2dbb8 100644
--- a/lib/skyfall/label.rb
+++ b/lib/skyfall/label.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative 'errors'
 require 'time'
 
diff --git a/lib/skyfall/stream.rb b/lib/skyfall/stream.rb
index acdcb3b..ed23e70 100644
--- a/lib/skyfall/stream.rb
+++ b/lib/skyfall/stream.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'eventmachine'
 require 'faye/websocket'
 require 'uri'