diff --git a/src/fideslang/models.py b/src/fideslang/models.py
index 7f15512e..6853d93e 100644
--- a/src/fideslang/models.py
+++ b/src/fideslang/models.py
@@ -991,6 +991,10 @@ class PrivacyDeclaration(BaseModel):
     features: List[str] = Field(
         default_factory=list, description="The features of processing personal data."
     )
+    flexible_legal_basis_for_processing: bool = Field(
+        description="Whether the legal basis for processing is 'flexible' (i.e. can be overridden in a privacy notice) for this declaration.",
+        default=False,
+    )
     legal_basis_for_processing: Optional[LegalBasisForProcessingEnum] = Field(
         description="The legal basis under which personal data is processed for this purpose."
     )
diff --git a/tests/fideslang/test_models.py b/tests/fideslang/test_models.py
index ea3d7dd8..6016c763 100644
--- a/tests/fideslang/test_models.py
+++ b/tests/fideslang/test_models.py
@@ -419,7 +419,8 @@ def test_expanded_system(self):
             uses_cookies=True,
             cookie_refresh=True,
             uses_non_cookie_access=True,
-            legitimate_interest_disclosure_url="http://www.example.com/legitimate_interest_disclosure"
+            legitimate_interest_disclosure_url="http://www.example.com/legitimate_interest_disclosure",
+            flexible_legal_basis_for_processing=True,
         )
 
     @mark.parametrize(