diff --git a/lib/puppet_x/ldapquery.rb b/lib/puppet_x/ldapquery.rb
index c919baf..e6cb24a 100644
--- a/lib/puppet_x/ldapquery.rb
+++ b/lib/puppet_x/ldapquery.rb
@@ -72,6 +72,9 @@ module PuppetX
           method: :simple_tls,
           tls_options: { ca_file: ca_file }
         }
+        if File.file?(ca_file)
+          conf[:encryption][:tls_options] = { ca_file: ca_file }
+        end
       end
 
       conf