diff --git a/datagateway_api/config.json.example b/datagateway_api/config.json.example
deleted file mode 100644
index 1b86bf57..00000000
--- a/datagateway_api/config.json.example
+++ /dev/null
@@ -1,29 +0,0 @@
-{
-    "datagateway_api": {
-        "extension": "/datagateway-api",
-        "backend": "python_icat",
-        "client_cache_size": 5,
-        "client_pool_init_size": 2,
-        "client_pool_max_size": 5,
-        "db_url": "mysql+pymysql://icatdbuser:icatdbuserpw@localhost:3306/icatdb",
-        "icat_url": "https://localhost:8181",
-        "icat_check_cert": false
-    },
-    "search_api": {
-        "extension": "/search-api",
-        "icat_url": "https://localhost:8181",
-        "icat_check_cert": false,
-        "mechanism": "anon",
-        "username": "",
-        "password": ""
-    },
-    "flask_reloader": false,
-    "log_level": "WARN",
-    "log_location": "/home/runner/work/datagateway-api/datagateway-api/logs.log",
-    "debug_mode": false,
-    "generate_swagger": false,
-    "host": "127.0.0.1",
-    "port": "5000",
-    "test_user_credentials": {"username": "root", "password": "pw"},
-    "test_mechanism": "simple"
-}
diff --git a/datagateway_api/src/common/config.py b/datagateway_api/src/common/config.py
index f51aadf1..39a30e39 100644
--- a/datagateway_api/src/common/config.py
+++ b/datagateway_api/src/common/config.py
@@ -1,4 +1,4 @@
-import json, yaml
+import yaml
 import logging
 from pathlib import Path
 import sys
@@ -186,17 +186,9 @@ def load(cls, path=Path(__file__).parent.parent.parent / "config.yaml"):
         :param path: path to the configuration file
         :return: APIConfig model object that contains the config data
         """
-        log = logging.getLogger()
         try:
-            jpath = path.parent / "config.json" #Maybe move this to parameters? Will doing it like this break anything?
-            if path.exists():
-                with open(path, encoding="utf-8") as target:
+            with open(path, encoding="utf-8") as target:
                     data = yaml.safe_load(target)
-
-            elif jpath.exists():
-                log.warn("DEPRECATED: Using a JSON config file is deprecated and may be removed in an upcoming version. Please use a yaml config file instead.") #Does this message need to exist?
-                with open(jpath, encoding="utf-8") as target:
-                    data = json.load(target)
             return cls(**data)
         except (IOError, ValidationError) as error:
             sys.exit(f"An error occurred while trying to load the config data: {error}")