diff --git a/CHANGELOG.md b/CHANGELOG.md
index 843c7c4..f56427d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -23,6 +23,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 # Releases
 <!-- @LatestFirst -->
 
+## [0.5.2] - 27/11/23
+- UMA-35: [Bug] Set websocket URL based on environment
+
 ## [0.5.1] - 27/11/23
 - UMA-34: [Bug] Broken deployment due to missing gevent installation
 
@@ -87,4 +90,5 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 [0.4.0]: https://github.com/jrsmth/ultima/compare/0.3.2...0.4.0
 [0.4.1]: https://github.com/jrsmth/ultima/compare/0.4.0...0.4.1
 [0.5.0]: https://github.com/jrsmth/ultima/compare/0.4.1...0.5.0
-[0.5.1]: https://github.com/jrsmth/ultima/compare/0.5.0...0.5.1
\ No newline at end of file
+[0.5.1]: https://github.com/jrsmth/ultima/compare/0.5.0...0.5.1
+[0.5.2]: https://github.com/jrsmth/ultima/compare/0.5.1...0.5.2
\ No newline at end of file
diff --git a/src/app/config/config.py b/src/app/config/config.py
index 06abf49..35dc97c 100644
--- a/src/app/config/config.py
+++ b/src/app/config/config.py
@@ -1,10 +1,13 @@
 class Config(object):
+    APP_URL = "http://localhost:8080"
     REDIS_URL = "redis://@localhost:6379/0"
 
 
 class DevConfig(Config):
+    APP_URL = "http://localhost:8080"
     REDIS_URL = "rediss://red-cklv99jj89us738u33i0:c1vXNdmZhDpXxxOTrkEsaBM9m9Kgk67z@frankfurt-redis.render.com:6379"
 
 
 class ProductionConfig(Config):
+    APP_URL = "https://www.ultima.jrsmth.io/"
     REDIS_URL = 'redis://red-cklv99jj89us738u33i0:6379'
diff --git a/src/app/game/game.py b/src/app/game/game.py
index a66cb5e..2cb7360 100644
--- a/src/app/game/game.py
+++ b/src/app/game/game.py
@@ -1,7 +1,7 @@
 import json
 import random
 
-from flask import render_template, url_for, redirect, Blueprint, Response
+from flask import render_template, Blueprint, Response, current_app
 
 from src.app.model.board.board import map_to_symbol
 from src.app.model.board.threeboard import ThreeBoard
@@ -21,10 +21,11 @@ def construct_blueprint(messages, socket, redis):
 
     @game_page.route("/game/<game_id>/<user_id>")
     def game(game_id, user_id):
+        app_url = current_app.config["APP_URL"]
         update_game_state(game_id, user_id + ' has joined the game')
         check_status(game_id)
 
-        return render_template("game.html", gameId=game_id, userId=user_id, version=__version__)
+        return render_template("game.html", appUrl=app_url, gameId=game_id, userId=user_id, version=__version__)
 
     @socket.on('restart')
     def restart(message):
diff --git a/src/app/util/redis.py b/src/app/util/redis.py
index 1598049..1afb548 100644
--- a/src/app/util/redis.py
+++ b/src/app/util/redis.py
@@ -33,7 +33,7 @@ def get_complex(self, key):
 
 
 # Standardises a JSON string for conversion into a python dict
-def standardise(value): # FixMe :: bit dodgy
+def standardise(value):  # FixMe :: bit dodgy
     # Convert Python `False` to JSON-standard `true`
     standardised = str(value).replace("False,", "false,").replace("True,", "true,")
 
diff --git a/src/resources/static/scripts/game.js b/src/resources/static/scripts/game.js
index 8db3535..dc6c4d0 100644
--- a/src/resources/static/scripts/game.js
+++ b/src/resources/static/scripts/game.js
@@ -1,6 +1,7 @@
 let userId;
 let gameState;
 let socket;
+let appUrl;
 
 async function init(gameId) {
     // Retrieve game state
@@ -224,11 +225,9 @@ function restart() {
 }
 
 function connectSocket(gameId) {
-    // const socket = io();
-    socket = io.connect('http://localhost:8080'); // ??
+    socket = io.connect(appUrl);
 
-    // const socket = io();
-    console.log(socket);
+    console.log(socket); // FixMe
 
     socket.on('connect', function() {
         console.log('connected');
diff --git a/src/resources/templates/game.html b/src/resources/templates/game.html
index dd18f14..dd77bc8 100644
--- a/src/resources/templates/game.html
+++ b/src/resources/templates/game.html
@@ -64,7 +64,9 @@
     <script src="{{ url_for('static', filename='scripts/game.js') }}"></script>
     <script>
         $(document).ready(function() {
+            appUrl = "{{ appUrl }}";
             userId = "{{ userId }}";
+
             enableCopy();
             connectSocket("{{ gameId }}");
             init("{{ gameId }}");