diff --git a/train-core.gemspec b/train-core.gemspec
index 1673084c..56e92371 100644
--- a/train-core.gemspec
+++ b/train-core.gemspec
@@ -37,6 +37,4 @@ Gem::Specification.new do |spec|
   spec.add_dependency 'mixlib-shellout', '>= 2.0', '< 4.0'
   spec.add_dependency 'net-ssh', '>= 2.9', '< 6.0'
   spec.add_dependency 'net-scp', '>= 1.2', '< 3.0'
-  spec.add_dependency 'ed25519', '~> 1.2' # ed25519 ssh key support
-  spec.add_dependency 'bcrypt_pbkdf', '~> 1.0' # ed25519 ssh key support
 end