1 files changed, 17 insertions, 0 deletions
diff --git a/lib/openssl/pkey.rb b/lib/openssl/pkey.rb
index ecb112f7..9cc32763 100644
--- a/lib/openssl/pkey.rb
+++ b/lib/openssl/pkey.rb
@@ -4,8 +4,21 @@
 # Copyright (C) 2017 Ruby/OpenSSL Project Authors
 #++
 
+require_relative 'marshal'
+
 module OpenSSL::PKey
+  class DH
+    include OpenSSL::Marshal
+  end
+
+  class DSA
+    include OpenSSL::Marshal
+  end
+
   if defined?(EC)
+  class EC
+    include OpenSSL::Marshal
+  end
   class EC::Point
     # :call-seq:
     #    point.to_bn([conversion_form]) -> OpenSSL::BN
@@ -22,4 +35,8 @@ module OpenSSL::PKey
     end
   end
   end
+
+  class RSA
+    include OpenSSL::Marshal
+  end
 end