diff --git a/Gemfile.lock b/Gemfile.lock
index 920c273eba..66170e55f5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -487,7 +487,7 @@ GEM
     rb-inotify (0.11.1)
       ffi (~> 1.0)
     rchardet (1.8.0)
-    recaptcha (5.18.0)
+    recaptcha (5.21.0)
     regexp_parser (2.8.2)
     reline (0.6.1)
       io-console (~> 0.5)