diff --git a/medcat-v2/medcat/config/config.py b/medcat-v2/medcat/config/config.py
index 5fcce13b3..9851463bd 100644
--- a/medcat-v2/medcat/config/config.py
+++ b/medcat-v2/medcat/config/config.py
@@ -166,6 +166,7 @@ class NLPConfig(SerialisableBaseModel):
 
     # NOTE: this will allow for more config entries
     #       since we don't know what other implementations may require
+
     class Config:
         extra = 'allow'
         validate_assignment = True
@@ -358,6 +359,9 @@ class Linking(ComponentConfig):
     and learning rate for type contexts.
     """
 
+    class Config:
+        extra = 'allow'
+
 
 class Preprocessing(SerialisableBaseModel):
     """The preprocessing part of the config"""