diff --git a/requirements/base.txt b/requirements/base.txt
index 4466244d..cd35807e 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -14,6 +14,8 @@ asgiref==3.8.1
     #   django-cors-headers
 asn1crypto==1.5.1
     # via webauthn
+async-timeout==4.0.3
+    # via redis
 attrs==23.2.0
     # via
     #   glom
@@ -227,7 +229,7 @@ mozilla-django-oidc-db==0.15.0
     # via open-api-framework
 notifications-api-common==0.2.2
     # via commonground-api-common
-open-api-framework==0.4.2
+open-api-framework==0.5.0
     # via -r requirements/base.in
 orderedmultidict==1.0.1
     # via furl
diff --git a/requirements/ci.txt b/requirements/ci.txt
index ed9537de..34d414d1 100644
--- a/requirements/ci.txt
+++ b/requirements/ci.txt
@@ -29,6 +29,11 @@ asn1crypto==1.5.1
     #   webauthn
 astroid==3.1.0
     # via pylint
+async-timeout==4.0.3
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   redis
 attrs==23.2.0
     # via
     #   -c requirements/base.txt
@@ -479,7 +484,7 @@ notifications-api-common==0.2.2
     #   -c requirements/base.txt
     #   -r requirements/base.txt
     #   commonground-api-common
-open-api-framework==0.4.2
+open-api-framework==0.5.0
     # via
     #   -c requirements/base.txt
     #   -r requirements/base.txt
diff --git a/requirements/dev.txt b/requirements/dev.txt
index bbe660b0..ee25f1c6 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -35,6 +35,11 @@ astroid==3.1.0
     #   -c requirements/ci.txt
     #   -r requirements/ci.txt
     #   pylint
+async-timeout==4.0.3
+    # via
+    #   -c requirements/ci.txt
+    #   -r requirements/ci.txt
+    #   redis
 attrs==23.2.0
     # via
     #   -c requirements/ci.txt
@@ -539,7 +544,7 @@ notifications-api-common==0.2.2
     #   -c requirements/ci.txt
     #   -r requirements/ci.txt
     #   commonground-api-common
-open-api-framework==0.4.2
+open-api-framework==0.5.0
     # via
     #   -c requirements/ci.txt
     #   -r requirements/ci.txt
diff --git a/src/openklant/scss/admin/_admin_theme.scss b/src/openklant/scss/admin/_admin_theme.scss
index 965d9660..3632b891 100644
--- a/src/openklant/scss/admin/_admin_theme.scss
+++ b/src/openklant/scss/admin/_admin_theme.scss
@@ -56,6 +56,12 @@ DO NOT PUT ANY TARGET APP-SPECIFIC RULES HERE.
   --input-group-text-bg: #{$color-secondary-dark};
   --input-group-text-fg: #{$color-dark};
   --formio-dropdown-highlighted-bg: #f2f2f2;
+
+  // version styling
+  --version-fg: var(--body-quiet-color);
+
+  // environment styling
+  --env-button-fg: #{$color-secondary};
 }
 
 @media (prefers-color-scheme: dark) {
@@ -263,43 +269,6 @@ div.breadcrumbs {
   background: none !important;
 }
 
-/* Footer */
-.login .version {
-  text-align: center;
-}
-.version {
-  padding: 0 30px;
-  color: $color_secondary_dark;
-  font-size: smaller;
-}
-
-#footer {
-  display: flex;
-  justify-content: space-between;
-  align-items: center;
-}
-
-/**
- * Environment banner
- */
-.env {
-  display: block;
-  line-height: 35px;
-  text-align: center;
-  font-weight: bold;
-  text-transform: uppercase;
-  color: $color_secondary;
-  background-color: $color_dark;
-  position: fixed;
-  top: 0;
-  height: 35px;
-  width: 300px;
-  left: 50%;
-  margin-left: -150px;
-  z-index: 1000001;
-  box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.2);
-}
-
 /**
  * Django form field lengths
  */
diff --git a/src/openklant/templates/admin/base_site.html b/src/openklant/templates/admin/base_site.html
index d8351cb1..2e2befad 100644
--- a/src/openklant/templates/admin/base_site.html
+++ b/src/openklant/templates/admin/base_site.html
@@ -1,4 +1,4 @@
-{% extends "admin/base.html" %}
+{% extends "open_api_framework/admin/base_site.html" %}
 {% load i18n static %}
 
 {% block title %}{{ title }} | {{ settings.PROJECT_NAME }}{% endblock %}
@@ -30,20 +30,3 @@ <h1 id="site-name"><a href="{% url 'admin:index' %}">{{ settings.PROJECT_NAME }}
 {% endblock %}
 
 {% block nav-global %}{% endblock %}
-
-{% block messages %}
-    {% if settings.ENVIRONMENT_SHOWN_IN_ADMIN %}
-        <div class="env env-{{ settings.ENVIRONMENT }}">{{ settings.ENVIRONMENT }}</div>
-    {% endif %}
-    {{ block.super }}
-{% endblock %}
-
-{% block footer %}
-    <div id="footer">
-        {% if user.is_authenticated and user.is_staff %}
-            <div class="version" title="Git SHA: {{ settings.GIT_SHA|default:'' }}">
-                {% blocktrans with version=settings.RELEASE %}version: {{version}}{% endblocktrans %}
-            </div>
-        {% endif %}
-    </div>
-{% endblock %}
diff --git a/src/openklant/utils/context_processors.py b/src/openklant/utils/context_processors.py
index 1ad23a8f..de54f75c 100644
--- a/src/openklant/utils/context_processors.py
+++ b/src/openklant/utils/context_processors.py
@@ -8,6 +8,7 @@ def settings(request):
         "SITE_TITLE",
         "PROJECT_NAME",
         "VNG_COMPONENTS_BRANCH",
+        "ENVIRONMENT_SHOWN_IN_ADMIN",
         "RELEASE",
         "GIT_SHA",
     )