diff --git a/CHANGES.md b/CHANGES.md
index 870f0a46..5bf9bdf7 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -4,7 +4,7 @@
 
 ### Changed
 
-- Handle `next` and `dev` tokens now returned as links from pgstac>=0.9.0 (author @zstatmanweil, https://github.com/stac-utils/stac-fastapi-pgstac/pull/140)
+- Handle `next` and `dev` tokens now returned as links from pgstac>=0.9.0 (author @zstatmanweil, <https://github.com/stac-utils/stac-fastapi-pgstac/pull/140>)
 - Add collection search extension ([#139](https://github.com/stac-utils/stac-fastapi-pgstac/pull/139))
 - keep `/search` and `/collections` extensions separate ([#158](https://github.com/stac-utils/stac-fastapi-pgstac/pull/158))
 - update `pypgstac` requirement to `>=0.8,<0.10`
@@ -15,6 +15,7 @@
 - changed `datetime` input type to `string` in GET endpoint methods
 - renamed `filter` to `filter_expr` input attributes in GET endpoint methods
 - delete `utils.format_datetime_range` function
+- add [free-text extension](https://github.com/stac-api-extensions/freetext-search) to collection search extensions ([#162](https://github.com/stac-utils/stac-fastapi-pgstac/pull/162))
 
 ### Fixed
 
@@ -23,7 +24,7 @@
 
 ## [3.0.1] - 2024-11-14
 
-- Enable runtime `CORS` configuration using environment variables (`CORS_ORIGIN="https://...,https://..."`, `CORS_METHODS="PUT,OPTIONS"`) (https://github.com/stac-utils/stac-fastapi-pgstac/pull/168)
+- Enable runtime `CORS` configuration using environment variables (`CORS_ORIGIN="https://...,https://..."`, `CORS_METHODS="PUT,OPTIONS"`) (<https://github.com/stac-utils/stac-fastapi-pgstac/pull/168>)
 
 ## [3.0.0] - 2024-08-02
 
diff --git a/stac_fastapi/pgstac/app.py b/stac_fastapi/pgstac/app.py
index 069d9723..d45ba9ec 100644
--- a/stac_fastapi/pgstac/app.py
+++ b/stac_fastapi/pgstac/app.py
@@ -24,6 +24,7 @@
 from stac_fastapi.extensions.core import (
     FieldsExtension,
     FilterExtension,
+    FreeTextExtension,
     OffsetPaginationExtension,
     SortExtension,
     TokenPaginationExtension,
@@ -62,6 +63,7 @@
     "sort": SortExtension(),
     "fields": FieldsExtension(),
     "filter": FilterExtension(client=FiltersClient()),
+    "free_text": FreeTextExtension(),
     "pagination": OffsetPaginationExtension(),
 }
 
diff --git a/stac_fastapi/pgstac/core.py b/stac_fastapi/pgstac/core.py
index 12455e45..efc10cf5 100644
--- a/stac_fastapi/pgstac/core.py
+++ b/stac_fastapi/pgstac/core.py
@@ -54,6 +54,7 @@ async def all_collections(  # noqa: C901
         sortby: Optional[str] = None,
         filter_expr: Optional[str] = None,
         filter_lang: Optional[str] = None,
+        q: Optional[List[str]] = None,
         **kwargs,
     ) -> Collections:
         """Cross catalog search (GET).
@@ -85,6 +86,7 @@ async def all_collections(  # noqa: C901
                 sortby=sortby,
                 filter_query=filter_expr,
                 filter_lang=filter_lang,
+                q=q,
             )
 
             async with request.app.state.get_connection(request, "r") as conn:
@@ -508,6 +510,7 @@ def _clean_search_args(  # noqa: C901
         sortby: Optional[str] = None,
         filter_query: Optional[str] = None,
         filter_lang: Optional[str] = None,
+        q: Optional[List[str]] = None,
     ) -> Dict[str, Any]:
         """Clean up search arguments to match format expected by pgstac"""
         if filter_query:
@@ -551,6 +554,9 @@ def _clean_search_args(  # noqa: C901
 
             base_args["fields"] = {"include": includes, "exclude": excludes}
 
+        if q:
+            base_args["q"] = " OR ".join(q)
+
         # Remove None values from dict
         clean = {}
         for k, v in base_args.items():
diff --git a/tests/conftest.py b/tests/conftest.py
index f6b272f4..d6592d9d 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -27,6 +27,7 @@
     CollectionSearchExtension,
     FieldsExtension,
     FilterExtension,
+    FreeTextExtension,
     OffsetPaginationExtension,
     SortExtension,
     TokenPaginationExtension,
@@ -148,6 +149,7 @@ def api_client(request, database):
         SortExtension(),
         FieldsExtension(),
         FilterExtension(client=FiltersClient()),
+        FreeTextExtension(),
         OffsetPaginationExtension(),
     ]
     collection_search_extension = CollectionSearchExtension.from_extensions(
diff --git a/tests/resources/test_collection.py b/tests/resources/test_collection.py
index dec20881..d25ed638 100644
--- a/tests/resources/test_collection.py
+++ b/tests/resources/test_collection.py
@@ -307,6 +307,26 @@ async def test_get_collections_search(
     assert len(resp.json()["collections"]) == 2
 
 
+@requires_pgstac_0_9_2
+@pytest.mark.asyncio
+async def test_collection_search_freetext(
+    app_client, load_test_collection, load_test2_collection
+):
+    # free-text
+    resp = await app_client.get(
+        "/collections",
+        params={"q": "temperature"},
+    )
+    assert len(resp.json()["collections"]) == 1
+    assert resp.json()["collections"][0]["id"] == load_test2_collection.id
+
+    resp = await app_client.get(
+        "/collections",
+        params={"q": "nosuchthing"},
+    )
+    assert len(resp.json()["collections"]) == 0
+
+
 @requires_pgstac_0_9_2
 @pytest.mark.asyncio
 async def test_all_collections_with_pagination(app_client, load_test_data):