diff --git a/Makefile b/Makefile
index f751164..f96416b 100644
--- a/Makefile
+++ b/Makefile
@@ -17,4 +17,6 @@ associate_commits:
 	sentry-cli releases -o $(SENTRY_ORG) -p $(SENTRY_PROJECT) set-commits --auto $(VERSION)
 
 run_flask:
-	VERSION=$(VERSION) FLASK_APP=app.py FLASK_ENV=development flask run -p 3001
+	# VERSION=$(VERSION) FLASK_APP=app.py FLASK_ENV=development flask run -p 3001
+	VERSION=$(VERSION) FLASK_APP=app.py flask run -p 3001
+
diff --git a/README.md b/README.md
index 583476d..919cffe 100644
--- a/README.md
+++ b/README.md
@@ -18,4 +18,5 @@ make deploy
 ```
 
 ## GIF
+based on 0.7.10
 ![Alt Text](flask-demo.gif)
diff --git a/app.py b/app.py
index 75b5cd2..36be022 100644
--- a/app.py
+++ b/app.py
@@ -5,10 +5,14 @@
 import sentry_sdk
 from sentry_sdk.integrations.flask import FlaskIntegration
 
+# sentry_sdk 0.13.5
+#  >= 0.11.2 is needed
 sentry_sdk.init(
     dsn="https://2ba68720d38e42079b243c9c5774e05c@sentry.io/1316515",
+    traces_sample_rate=1.0,
     integrations=[FlaskIntegration()],
-    release=os.environ.get("VERSION")
+    release=os.environ.get("VERSION"),
+    environment="prod"
 )
 
 app = Flask(__name__)
@@ -26,8 +30,12 @@ def handled_exception():
 
 @app.route('/unhandled', methods=['GET'])
 def unhandled_exception():
+    with sentry_sdk.start_span(op="http", description="GET /unhandled") as span:
+        span.set_tag("http.status_code", 200)
+        span.set_data("http.foobarsessionid", 123456)
+    span.finish()
     obj = {}
-    obj['keyDoesntExist']
+    obj['keyDoesntExist1']
 
 Inventory = {
     'wrench': 1,
@@ -65,6 +73,10 @@ def sentry_event_context():
 
 @app.route('/checkout', methods=['POST'])
 def checkout():
+    with sentry_sdk.start_span(op="http", description="POST /checkout") as span:
+        span.set_tag("http.status_code", 200)
+        span.set_data("http.foobarsessionid", 987654)
+        span.finish()
 
     order = json.loads(request.data)
     print "Processing order for: " + order["email"]
@@ -72,4 +84,4 @@ def checkout():
     
     process_order(cart)
 
-    return 'Success'
+    return 'Success'
\ No newline at end of file
diff --git a/generate_events.sh b/generate_events.sh
index efbb73b..eeb8cd6 100644
--- a/generate_events.sh
+++ b/generate_events.sh
@@ -10,6 +10,6 @@ run_curl () {
 NAME=flask
 RANDOM_STRING=`openssl rand -base64 8`
 
-run_curl https://sentry-demos-$NAME.herokuapp.com/handled
-run_curl https://sentry-demos-$NAME.herokuapp.com/unhandled
-run_curl -X POST https://sentry-demos-$NAME.herokuapp.com/checkout -H "Content-Type: application/json" -H "X-Session-ID: _${RANDOM_STRING}" -H "X-Transaction-ID: _${RANDOM_STRING}" -d "{\"email\":\"$X@yahoo.com\", \"cart\":[{\"id\":\"wrench\", \"name\":\"Wrench\", \"price\":500}]}"
\ No newline at end of file
+run_curl https://will-flask-demo.herokuapp.com/handled
+run_curl https://will-flask-demo.herokuapp.com/unhandled
+run_curl -X POST https://will-flask-demo.herokuapp.com/checkout -H "Content-Type: application/json" -H "X-Session-ID: _${RANDOM_STRING}" -H "X-Transaction-ID: _${RANDOM_STRING}" -d "{\"email\":\"$X@yahoo.com\", \"cart\":[{\"id\":\"wrench\", \"name\":\"Wrench\", \"price\":500}]}"
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index cafdfdc..c28aeea 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 flask==1.0.2
-sentry-sdk[flask]==0.9.5
+sentry-sdk[flask]==0.13.5
 flask-cors==3.0.7
 gunicorn==0.14.2