diff --git a/lib/bootstrap.rb b/lib/bootstrap.rb
index d1cf51e4..d44f7e54 100644
--- a/lib/bootstrap.rb
+++ b/lib/bootstrap.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'bootstrap/version'
 require 'popper_js'
 
@@ -15,6 +17,12 @@ def load!
         # The deprecated `sass` gem:
         ::Sass.load_paths << stylesheets_path
       end
+
+      if defined?(::Sass::Script::Value::Number)
+        # Set precision to 6 as per:
+        # https://github.com/twbs/bootstrap/blob/da717b03e6e72d7a61c007acb9223b9626ae5ee5/package.json#L28
+        ::Sass::Script::Value::Number.precision = [6, ::Sass::Script::Value::Number.precision].max
+      end
     end
 
     # Paths
diff --git a/lib/bootstrap/engine.rb b/lib/bootstrap/engine.rb
index 888c764b..0ce84644 100644
--- a/lib/bootstrap/engine.rb
+++ b/lib/bootstrap/engine.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'autoprefixer-rails'
 
 module Bootstrap
diff --git a/lib/bootstrap/version.rb b/lib/bootstrap/version.rb
index f4641cfb..1b9c7ac3 100644
--- a/lib/bootstrap/version.rb
+++ b/lib/bootstrap/version.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Bootstrap
   VERSION       = '4.1.3'
   BOOTSTRAP_SHA = '3b558734382ce58b51e5fc676453bfd53bba9201'