diff --git a/FlaskAPI/blurred_temp_image.jpeg b/FlaskAPI/blurred_temp_image.jpeg
deleted file mode 100644
index 77ff865..0000000
Binary files a/FlaskAPI/blurred_temp_image.jpeg and /dev/null differ
diff --git a/FlaskAPI/controllers/status.py b/FlaskAPI/controllers/status.py
index 26097e5..401ccd1 100644
--- a/FlaskAPI/controllers/status.py
+++ b/FlaskAPI/controllers/status.py
@@ -4,4 +4,4 @@ status_blueprint = Blueprint('status_blueprint', __name__)
 
 @status_blueprint.route('/status/ok', methods=['GET'])
 def return_ok():
-    return 200
+    return '', 200
diff --git a/Spring b/Spring
index dedb3c1..f8fdeb0 160000
--- a/Spring
+++ b/Spring
@@ -1 +1 @@
-Subproject commit dedb3c1a24270a3544e84d7e3bbbe9c331fc6270
+Subproject commit f8fdeb0dd53fd30a4bd1f8afb77135ddb8558e1c
diff --git a/scripts/common.py b/scripts/common.py
index e838ffa..29eade4 100644
--- a/scripts/common.py
+++ b/scripts/common.py
@@ -1,3 +1,4 @@
+import json
 import person_pb2
 
 person_proto = person_pb2.Person()
@@ -15,14 +16,14 @@ person_json = {
     "email": "john.doe@email.com",
     "phone": "123-456-7890"
 }
-person_json = str(person_json).encode('utf-8')
+person_json = json.dumps(person_json)
 
 FRAMEWORKS = [
-    # ('Actix', 'tcc-actix', 'orange'),
-    # ('ASP.NET', 'tcc-aspnet', 'blue'),
-    # ('Flask', 'tcc-flask', 'grey'),
+    ('Actix', 'tcc-actix', 'orange'),
+    ('ASP.NET', 'tcc-aspnet', 'blue'),
+    ('Flask', 'tcc-flask', 'grey'),
     ('Express', 'tcc-express', 'red'),
-    # ('Spring', 'tcc-spring', 'green'),
+    ('Spring', 'tcc-spring', 'green'),
 ]
 
 ENDPOINTS = {
@@ -36,14 +37,11 @@ ENDPOINTS = {
 AVG_RUNS = 5
 
 API_REQUESTS = [
-    # ('/status/ok', 'GET', range(0, 30_000, 5000), None),
-    # ('/simulation/harmonic-progression?n=100000', 'GET', range(0, 30_000, 5000), None),
-    ('/simulation/json', 'POST', range(0, 30_000, 5000), (person_json, "application/json")),
-    # ('/image/save-big-image', 'POST', range(0, 500, 50), (open('big-image.png', 'rb').read(), "image/png")),
-    # ('/image/load-small-image', 'GET', range(0, 30_000, 5000), None),
-    # ('/static/small-image.png', 'GET', range(0, 30_000, 5000), None),
-    # ('/image/load-big-image', 'GET', range(0, 500, 50), None),
-    # ('/static/big-image.png', 'GET', range(0, 500, 50), None),
-    # ('/static/nginx.html', 'GET', range(0, 30_000, 5000), None),
-    ('/simulation/protobuf', 'POST', range(0, 30_000, 5000), (person_proto, "application/protobuf")),
+    ('/status/ok', 'GET', range(0, 30_000, 5000), None),
+    ('/simulation/harmonic-progression?n=100000', 'GET', range(0, 30_000, 5000), None),
+    # ('/simulation/json', 'POST', range(0, 30_000, 5000), (person_json, "application/json")),
+    ('/image/save-big-image', 'POST', range(0, 500, 50), (open('big-image.png', 'rb').read(), "image/png")),
+    ('/static/small-image.png', 'GET', range(0, 30_000, 5000), None),
+    ('/static/big-image.png', 'GET', range(0, 500, 50), None),
+    # ('/simulation/protobuf', 'POST', range(0, 30_000, 5000), (person_proto, "application/protobuf")),
 ]