diff --git a/Gemfile b/Gemfile
index c2ab93af8..273c43eea 100644
--- a/Gemfile
+++ b/Gemfile
@@ -24,7 +24,7 @@ gem 'rubyzip', '~> 2.3.0'
 gem 'tzinfo-data', platforms: [:mingw, :x64_mingw, :mswin]
 
 # TOTP-based 2-factor authentication
-gem 'rotp'
+gem 'rotp', '>= 5.0.0'
 gem 'rqrcode'
 
 # Optional gem for LDAP authentication