diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index e9868d8..ffb7e10 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -12,6 +12,7 @@
 - move datetime validation in `StacCommonMetadata` model definition (#131, @eseglem)
 - use `StacBaseModel` as base model for `Asset` model (#148, @vincentsarago)
 - add `license` in `StacCommonMetadata` model (#147, @vincentsarago)
+- make `limit` optional in `api.Search` model (#150, @vincentsarago)
 
 3.0.0 (2024-01-25)
 ------------------
diff --git a/stac_pydantic/api/search.py b/stac_pydantic/api/search.py
index 62d1e73..c68fd60 100644
--- a/stac_pydantic/api/search.py
+++ b/stac_pydantic/api/search.py
@@ -42,7 +42,7 @@ class Search(BaseModel):
     bbox: Optional[BBox] = None
     intersects: Optional[Intersection] = None
     datetime: Optional[str] = None
-    limit: int = 10
+    limit: Optional[int] = 10
 
     # Private properties to store the parsed datetime values. Not part of the model schema.
     _start_date: Optional[dt] = None