diff --git a/bin/wpscan-memprof b/bin/wpscan-memprof
index 2397ce7e..9b2e5202 100755
--- a/bin/wpscan-memprof
+++ b/bin/wpscan-memprof
@@ -1,4 +1,5 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
 
 require 'memory_profiler' # https://github.com/SamSaffron/memory_profiler
 require 'wpscan'
diff --git a/bin/wpscan-stackprof b/bin/wpscan-stackprof
index 8e25adc6..07f2f05c 100755
--- a/bin/wpscan-stackprof
+++ b/bin/wpscan-stackprof
@@ -1,4 +1,5 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
 
 require 'stackprof' # https://github.com/tmm1/stackprof
 require 'wpscan'