diff --git a/kfinance/CHANGELOG.md b/kfinance/CHANGELOG.md
index c77a249..dfc0dd6 100644
--- a/kfinance/CHANGELOG.md
+++ b/kfinance/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Changelog
 
+## v5.1.1
+- Change MergerInfo consideration to Optional
+
 ## v5.1.0
 - Add target price and analyst recommendation tools
 
diff --git a/kfinance/client/kfinance.py b/kfinance/client/kfinance.py
index 4bc5939..ffcab74 100644
--- a/kfinance/client/kfinance.py
+++ b/kfinance/client/kfinance.py
@@ -1481,7 +1481,7 @@ def get_participants(self) -> dict:
         }
 
     @property
-    def get_consideration(self) -> MergerConsideration:
+    def get_consideration(self) -> MergerConsideration | None:
         """A merger's consideration is the assets exchanged for the target company.
 
         Properties in the consideration include:
diff --git a/kfinance/domains/mergers_and_acquisitions/merger_and_acquisition_models.py b/kfinance/domains/mergers_and_acquisitions/merger_and_acquisition_models.py
index 22603fe..0ea45e9 100644
--- a/kfinance/domains/mergers_and_acquisitions/merger_and_acquisition_models.py
+++ b/kfinance/domains/mergers_and_acquisitions/merger_and_acquisition_models.py
@@ -54,4 +54,4 @@ class MergerConsideration(BaseModel):
 class MergerInfo(BaseModel):
     timeline: list[MergerTimelineElement]
     participants: MergerParticipants
-    consideration: MergerConsideration
+    consideration: MergerConsideration | None = None