diff --git a/CHANGELOG.md b/CHANGELOG.md
index 644c74c..087dae3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 
 The format is roughly based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
+## [0.31.0]
+
+- Remove deprecated `collection_whitelist` config ([#139](https://github.com/Open-EO/openeo-aggregator/issues/139))
+
 ## [0.30.0]
 
 - Add backend-aware collection allow-list option ([#139](https://github.com/Open-EO/openeo-aggregator/issues/139))
diff --git a/src/openeo_aggregator/about.py b/src/openeo_aggregator/about.py
index b605f82..44dbebd 100644
--- a/src/openeo_aggregator/about.py
+++ b/src/openeo_aggregator/about.py
@@ -2,7 +2,7 @@
 import sys
 from typing import Optional
 
-__version__ = "0.30.0a1"
+__version__ = "0.31.0a1"
 
 
 def log_version_info(logger: Optional[logging.Logger] = None):
diff --git a/src/openeo_aggregator/backend.py b/src/openeo_aggregator/backend.py
index 7bef2aa..58ee2ca 100644
--- a/src/openeo_aggregator/backend.py
+++ b/src/openeo_aggregator/backend.py
@@ -213,8 +213,7 @@ def _get_all_metadata(self) -> Tuple[List[dict], _InternalCollectionMetadata]:
         """
         # Group collection metadata by hierarchically: collection id -> backend id -> metadata
         grouped = defaultdict(dict)
-        # TODO: remove deprecated collection_whitelist usage
-        collection_allow_list = get_backend_config().collection_allow_list or get_backend_config().collection_whitelist
+        collection_allow_list = get_backend_config().collection_allow_list
         if collection_allow_list:
             collection_allow_list = CollectionAllowList(collection_allow_list)
 
diff --git a/src/openeo_aggregator/config.py b/src/openeo_aggregator/config.py
index 0800368..dd0da7f 100644
--- a/src/openeo_aggregator/config.py
+++ b/src/openeo_aggregator/config.py
@@ -58,10 +58,6 @@ class AggregatorBackendConfig(OpenEoBackendConfig):
     # TTL for connection caching.
     connections_cache_ttl: float = 5 * 60.0
 
-    # List of collection ids to cover with the aggregator (when None: support union of all upstream collections)
-    # TODO: remove this deprecated field
-    collection_whitelist: Optional[List[Union[str, re.Pattern]]] = None
-
     # Allow list for collection ids to cover with the aggregator.
     # By default (value `None`): support union of all upstream collections.
     # To enable a real allow list, use a list of items as illustrated: