diff --git a/Gemfile b/Gemfile
index 669dd40..a8a6024 100644
--- a/Gemfile
+++ b/Gemfile
@@ -75,4 +75,4 @@ gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw]
 gem 'net-http'
 gem 'uri', '0.10.0'
 gem 'strscan', '3.0.1'
-gem 'stringio', '3.0.1'
+gem 'stringio', '3.0.5'
diff --git a/Gemfile.lock b/Gemfile.lock
index 3c3556e..7250742 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -278,7 +278,7 @@ GEM
       sprockets (>= 3.0.0)
     sqlite3 (1.5.3)
       mini_portile2 (~> 2.8.0)
-    stringio (3.0.1)
+    stringio (3.0.5)
     strscan (3.0.1)
     thor (1.2.1)
     tilt (2.0.10)
@@ -337,7 +337,7 @@ DEPENDENCIES
   sassc-rails (~> 2.1.2)
   sdoc (~> 2.4.0)
   sqlite3 (~> 1.5.3)
-  stringio (= 3.0.1)
+  stringio (= 3.0.5)
   strscan (= 3.0.1)
   turbolinks (~> 5.2.1)
   tzinfo-data