diff --git a/neuralnetlib/optimizers.py b/neuralnetlib/optimizers.py
index a941c83..59bc4a5 100644
--- a/neuralnetlib/optimizers.py
+++ b/neuralnetlib/optimizers.py
@@ -24,6 +24,10 @@ def from_config(config: dict):
             return RMSprop.from_config(config)
         elif config['name'] == 'Adam':
             return Adam.from_config(config)
+        elif config['name'] == 'AdaBelief':
+            return AdaBelief.from_config(config)
+        elif config['name'] == 'RAdam':
+            return RAdam.from_config(config)
         else:
             raise ValueError(f"Unknown optimizer name: {config['name']}")