diff --git a/app/app.py b/app/app.py
index c2d9e05..852bc39 100755
--- a/app/app.py
+++ b/app/app.py
@@ -3,11 +3,13 @@
 """Main Haldis script"""
 
 import logging
+import sentry_sdk
 import typing
 from datetime import datetime
 from logging.handlers import TimedRotatingFileHandler
 
 from admin import init_admin
+from config import Configuration
 from flask import Flask, render_template
 from flask_bootstrap import Bootstrap, StaticCDN
 from flask_debugtoolbar import DebugToolbarExtension
@@ -19,6 +21,7 @@ from login import init_login
 from markupsafe import Markup
 from models import db
 from models.anonymous_user import AnonymouseUser
+from sentry_sdk.integrations.flask import FlaskIntegration
 from utils import euro_string, price_range_string, ignore_none
 from zeus import init_oauth
 
@@ -171,5 +174,10 @@ def create_app():
 
 # For usage when you directly call the script with python
 if __name__ == "__main__":
+    sentry_sdk.init(
+        dsn=Configuration.SENTRY_DSN,
+        integrations=[FlaskIntegration()]
+    )
+
     app, app_mgr = create_app()
     app_mgr.run()
diff --git a/app/config.example.py b/app/config.example.py
index 2d02245..43cc22d 100644
--- a/app/config.example.py
+++ b/app/config.example.py
@@ -12,5 +12,6 @@ class Configuration:
     SECRET_KEY = "<change>"
     SLACK_WEBHOOK = None
     LOGFILE = "haldis.log"
+    SENTRY_DSN = "<change>"
     ZEUS_KEY = "tomtest"
     ZEUS_SECRET = "blargh"
diff --git a/requirements.in b/requirements.in
index 36c6ea3..8fbcf3f 100644
--- a/requirements.in
+++ b/requirements.in
@@ -12,3 +12,4 @@ black
 pymysql
 pyyaml
 tatsu<5.6 # >=5.6 needs Python >=3.8
+sentry-sdk[flask]
diff --git a/requirements.txt b/requirements.txt
index bbca76b..b2ca927 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 #
-# This file is autogenerated by pip-compile
+# This file is autogenerated by pip-compile with python 3.9
 # To update, run:
 #
 #    pip-compile
@@ -11,11 +11,15 @@ appdirs==1.4.4
 black==21.6b0
     # via -r requirements.in
 blinker==1.4
-    # via flask-debugtoolbar
+    # via
+    #   flask-debugtoolbar
+    #   sentry-sdk
 cachelib==0.1.1
     # via flask-oauthlib
 certifi==2021.5.30
-    # via requests
+    # via
+    #   requests
+    #   sentry-sdk
 chardet==4.0.0
     # via requests
 click==7.1.2
@@ -24,6 +28,19 @@ click==7.1.2
     #   flask
 dominate==2.6.0
     # via flask-bootstrap
+flask==1.1.4
+    # via
+    #   -r requirements.in
+    #   flask-admin
+    #   flask-bootstrap
+    #   flask-debugtoolbar
+    #   flask-login
+    #   flask-migrate
+    #   flask-oauthlib
+    #   flask-script
+    #   flask-sqlalchemy
+    #   flask-wtf
+    #   sentry-sdk
 flask-admin==1.5.8
     # via -r requirements.in
 flask-bootstrap==3.3.7.1
@@ -44,18 +61,6 @@ flask-sqlalchemy==2.5.1
     #   flask-migrate
 flask-wtf==0.15.1
     # via -r requirements.in
-flask==1.1.4
-    # via
-    #   -r requirements.in
-    #   flask-admin
-    #   flask-bootstrap
-    #   flask-debugtoolbar
-    #   flask-login
-    #   flask-migrate
-    #   flask-oauthlib
-    #   flask-script
-    #   flask-sqlalchemy
-    #   flask-wtf
 greenlet==1.1.0
     # via sqlalchemy
 idna==2.10
@@ -92,10 +97,12 @@ pyyaml==5.4.1
     # via -r requirements.in
 regex==2021.4.4
     # via black
-requests-oauthlib==1.1.0
-    # via flask-oauthlib
 requests==2.25.1
     # via requests-oauthlib
+requests-oauthlib==1.1.0
+    # via flask-oauthlib
+sentry-sdk[flask]==1.10.1
+    # via -r requirements.in
 six==1.16.0
     # via python-dateutil
 sqlalchemy==1.4.18
@@ -106,8 +113,10 @@ tatsu==4.4.0
     # via -r requirements.in
 toml==0.10.2
     # via black
-urllib3==1.26.5
-    # via requests
+urllib3==1.26.12
+    # via
+    #   requests
+    #   sentry-sdk
 visitor==0.1.3
     # via flask-bootstrap
 werkzeug==1.0.1