diff --git a/Gemfile.lock b/Gemfile.lock
index b2f35f80..3fcff13e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -107,7 +107,7 @@ GEM
     brakeman (6.1.2)
       racc
     builder (3.2.4)
-    capistrano (3.18.1)
+    capistrano (3.19.0)
       airbrussh (>= 1.0.0)
       i18n
       rake (>= 10.0.0)
@@ -138,7 +138,7 @@ GEM
       json
       simplecov
     colorize (0.8.1)
-    concurrent-ruby (1.3.1)
+    concurrent-ruby (1.3.3)
     connection_pool (2.4.1)
     countries (6.0.1)
       unaccent (~> 0.3)
@@ -418,9 +418,8 @@ GEM
       simplecov_json_formatter (~> 0.1)
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.4)
-    sshkit (1.22.2)
+    sshkit (1.23.0)
       base64
-      mutex_m
       net-scp (>= 1.1.2)
       net-sftp (>= 2.1.2)
       net-ssh (>= 2.8.0)