diff --git a/CHANGES.md b/CHANGES.md
index 5ed1cc94f..0b5d3f192 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -12,6 +12,7 @@
 * Improve bbox and datetime typing ([#490](https://github.com/stac-utils/stac-fastapi/pull/490)
 * Add `items` link to inferred link relations ([#634](https://github.com/stac-utils/stac-fastapi/issues/634))
 * Make sure FastAPI uses Pydantic validation and serialization by not wrapping endpoint output with a Response object ([#650](https://github.com/stac-utils/stac-fastapi/pull/650))
+* Allow `GeometryCollections` for `intersects` parameter in POST search queries ([#548](https://github.com/stac-utils/stac-fastapi/pull/548))
 
 ### Removed
 
diff --git a/stac_fastapi/types/stac_fastapi/types/search.py b/stac_fastapi/types/stac_fastapi/types/search.py
index a36c5a577..0851c1d30 100644
--- a/stac_fastapi/types/stac_fastapi/types/search.py
+++ b/stac_fastapi/types/stac_fastapi/types/search.py
@@ -12,6 +12,7 @@
 
 import attr
 from geojson_pydantic.geometries import (
+    GeometryCollection,
     LineString,
     MultiLineString,
     MultiPoint,
@@ -127,7 +128,15 @@ class BaseSearchPostRequest(BaseModel):
     ids: Optional[List[str]]
     bbox: Optional[BBox]
     intersects: Optional[
-        Union[Point, MultiPoint, LineString, MultiLineString, Polygon, MultiPolygon]
+        Union[
+            Point,
+            MultiPoint,
+            LineString,
+            MultiLineString,
+            Polygon,
+            MultiPolygon,
+            GeometryCollection,
+        ]
     ]
     datetime: Optional[DateTimeType]
     limit: Optional[Limit] = Field(default=10)