diff --git a/Gemfile.lock b/Gemfile.lock
index 6408c8f..c782547 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -227,7 +227,7 @@ GEM
       redis-namespace (~> 1.5, >= 1.5.2)
     sidekiq-status (0.6.0)
       sidekiq (>= 2.7)
-    simple_captcha2 (0.4.3)
+    simple_captcha2 (0.5.0)
       rails (>= 4.1)
     simplecov (0.13.0)
       docile (~> 1.1.0)