diff --git a/smart_proxy_remote_execution_ssh.gemspec b/smart_proxy_remote_execution_ssh.gemspec
index 312cbab..a69c33c 100644
--- a/smart_proxy_remote_execution_ssh.gemspec
+++ b/smart_proxy_remote_execution_ssh.gemspec
@@ -32,7 +32,7 @@ Gem::Specification.new do |gem|
 
   gem.add_runtime_dependency('ed25519', '>= 1.2', '< 2.0')
   gem.add_runtime_dependency('bcrypt_pbkdf', '>= 1.0', '< 2.0')
-  gem.add_runtime_dependency('smart_proxy_dynflow', '~> 0.9', '>= 0.9.4')
+  gem.add_runtime_dependency('smart_proxy_dynflow', '>= 0.9.4', '< 2.0.0')
   gem.add_runtime_dependency('net-ssh', '~> 7.2')
   gem.add_runtime_dependency('mqtt', '~> 0.5')
 end