diff --git a/.env.test b/.env.test
index e987881..29627dd 100644
--- a/.env.test
+++ b/.env.test
@@ -1,4 +1,4 @@
 DATABASE_URL=psql://teilchensammler:teilchensammler@localhost:5432/teilchensammler_test
 DEBUG=On
 SECRET_KEY=django-insecure-x=%#_wxu0h=d*m#seui9+mjh3vu7of8+4+gpwj@556.un0r1%.
-DEV=On
+DEV=Off
diff --git a/config/settings.py b/config/settings.py
index 1ba5c58..ca24b62 100644
--- a/config/settings.py
+++ b/config/settings.py
@@ -47,6 +47,7 @@ if env("DEV") is True:
     INSTALLED_APPS.extend(
         [
             "django_extensions",
+            "debug_toolbar",
         ]
     )
     SHELL_PLUS = "ipython"
@@ -60,6 +61,11 @@ MIDDLEWARE = [
     "django.contrib.messages.middleware.MessageMiddleware",
     "django.middleware.clickjacking.XFrameOptionsMiddleware",
 ]
+if env("DEV") is True:
+    MIDDLEWARE.append("debug_toolbar.middleware.DebugToolbarMiddleware")
+    INTERNAL_IPS = [
+        "127.0.0.1",
+    ]
 
 ROOT_URLCONF = "config.urls"
 
diff --git a/config/urls.py b/config/urls.py
index a1445ed..894cad6 100644
--- a/config/urls.py
+++ b/config/urls.py
@@ -17,8 +17,9 @@ Including another URLconf
 
 from django.contrib import admin
 from django.urls import include, path
+from debug_toolbar.toolbar import debug_toolbar_urls
 
 urlpatterns = [
     path("collector/", include("collector.urls")),
     path("admin/", admin.site.urls),
-]
+] + debug_toolbar_urls()
diff --git a/requirements/dev.in b/requirements/dev.in
index f94c67b..d01f253 100644
--- a/requirements/dev.in
+++ b/requirements/dev.in
@@ -1,5 +1,6 @@
 -r test.in
 
+django-debug-toolbar
 django-extensions
 django-stubs
 ipython
diff --git a/requirements/dev.txt b/requirements/dev.txt
index 3ce78a7..ed50f21 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -1,4 +1,4 @@
-# SHA1:39149ea105722c1b0bd2fea274b35b595e3eab9a
+# SHA1:0f71cd64a0fccc28bc97abcbc3c140da1b54b8e4
 #
 # This file is autogenerated by pip-compile-multi
 # To update, run:
@@ -10,6 +10,7 @@ asttokens==3.0.0
 build==1.2.2.post1
 click==8.1.8
 decorator==5.2.1
+django-debug-toolbar==5.0.1
 django-extensions==3.2.3
 django-stubs==5.1.3
 django-stubs-ext==5.1.3