diff --git a/lib/puppet/provider/mongodb_user/mongodb.rb b/lib/puppet/provider/mongodb_user/mongodb.rb
index 07762fd57..513169e26 100644
--- a/lib/puppet/provider/mongodb_user/mongodb.rb
+++ b/lib/puppet/provider/mongodb_user/mongodb.rb
@@ -103,6 +103,7 @@ def password_hash=(_value)
         pwd: @resource[:password_hash],
         digestPassword: false
       }
+      command[:mechanisms] = @resource[:auth_mechanism] == :scram_sha_1 ? ['SCRAM-SHA-1'] : ['SCRAM-SHA-256']
 
       mongo_eval("db.runCommand(#{command.to_json})", @resource[:database])
     else
diff --git a/spec/unit/puppet/provider/mongodb_user/mongodb_spec.rb b/spec/unit/puppet/provider/mongodb_user/mongodb_spec.rb
index 197605108..677db7e00 100644
--- a/spec/unit/puppet/provider/mongodb_user/mongodb_spec.rb
+++ b/spec/unit/puppet/provider/mongodb_user/mongodb_spec.rb
@@ -93,7 +93,8 @@
       {
           "updateUser":"new_user",
           "pwd":"pass",
-          "digestPassword":false
+          "digestPassword":false,
+          "mechanisms":["SCRAM-SHA-1"]
       }
       EOS
       allow(provider).to receive(:mongo_eval).