diff --git a/Gemfile.lock b/Gemfile.lock
index 1bd5c922..02c85f58 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -318,7 +318,7 @@ GEM
       ndr_support (~> 5.0)
       rails (>= 7.0, < 8.1)
     nenv (0.3.0)
-    net-imap (0.5.1)
+    net-imap (0.5.6)
       date
       net-protocol
     net-ldap (0.19.0)
diff --git a/vendor/cache/net-imap-0.5.1.gem b/vendor/cache/net-imap-0.5.1.gem
deleted file mode 100644
index aa75d023..00000000
Binary files a/vendor/cache/net-imap-0.5.1.gem and /dev/null differ
diff --git a/vendor/cache/net-imap-0.5.6.gem b/vendor/cache/net-imap-0.5.6.gem
new file mode 100644
index 00000000..700b181b
Binary files /dev/null and b/vendor/cache/net-imap-0.5.6.gem differ