diff --git a/Gemfile.lock b/Gemfile.lock
index 86357b9e..ecb1876d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -195,7 +195,7 @@ GEM
       builder
       minitest (>= 5.0)
       ruby-progressbar
-    mocha (2.7.1)
+    mocha (3.0.0)
       ruby2_keywords (>= 0.0.5)
     msgpack (1.8.0)
     net-imap (0.5.12)