diff --git a/djangoproject/templates/well-known/security.txt b/djangoproject/templates/well-known/security.txt
new file mode 100644
index 0000000000..87a01b531f
--- /dev/null
+++ b/djangoproject/templates/well-known/security.txt
@@ -0,0 +1,27 @@
+{% spaceless %}
+{% comment %}
+This file is served under the well-known URIs
+
+- https://www.djangoproject.com/.well-known/security.txt
+- https://docs.djangoproject.com/.well-known/security.txt
+
+See https://securitytxt.org/ for more information about the security.txt standard.
+{% endcomment %}
+{% endspaceless %}# Hello security researcher!
+# We appreciate your help in keeping Django & djangoproject.com secure.
+
+# Please report security issues that concern this website (djangoproject.com)
+# to the website working group: website-wg@djangoproject.com
+# This helps us make sure your report is directed to the right people.
+# You can find guidelines for reporting website security issues here: https://github.com/django/djangoproject.com/blob/main/.github/SECURITY.md
+
+# DO NOT USE security@djangoproject.com FOR ISSUES THAT CONCERN THE WEBSITE.
+
+# If your report concerns Django itself (the Python package, not this website), please follow the Django security reporting process:
+Policy: https://www.djangoproject.com/security/
+Contact: https://www.djangoproject.com/security/
+Expires: 2026-12-31T00:00:00.000Z
+Preferred-Languages: en
+
+# If you would like to encrypt your report, you can use the following PGP key:
+Encryption: https://keys.openpgp.org/vks/v1/by-fingerprint/AF3516D27D0621171E0CCE25FCB84B8D1D17F80B
diff --git a/djangoproject/tests.py b/djangoproject/tests.py
index a95f0b939f..79e941fa56 100644
--- a/djangoproject/tests.py
+++ b/djangoproject/tests.py
@@ -1,3 +1,6 @@
+import re
+import warnings
+from datetime import datetime, timedelta
 from http import HTTPStatus
 from io import StringIO
 
@@ -164,3 +167,35 @@ def test_single_h1_per_page(self):
                     response = self.client.get(url)
                     self.assertEqual(response.status_code, 200)
                     self.assertContains(response, "<h1", count=1)
+
+
+class SecurityTxtTests(TestCase):
+    """
+    Tests for the security.txt file.
+    """
+
+    def test_security_txt(self):
+        """
+        The security.txt file should be reachable at the expected URL.
+        """
+        response = self.client.get("/.well-known/security.txt")
+        self.assertEqual(response.status_code, HTTPStatus.OK)
+        self.assertEqual(response["Content-Type"], "text/plain")
+
+        match = re.search(
+            "^Expires: (.*)$", response.content.decode("utf-8"), flags=re.MULTILINE
+        )
+        if match is None:
+            self.fail("No Expires line found in security.txt")
+        else:
+            expires = match[1]
+
+        expires_date = datetime.fromisoformat(expires).date()
+
+        if expires_date < datetime.now().date() - timedelta(days=15):
+            warnings.warn(
+                "The djangoproject/templates/well-known/security.txt file is"
+                " close to expiring. Please update the 'Expires' line to confirm"
+                " the contents are still accurate.",
+                category=UserWarning,
+            )
diff --git a/djangoproject/urls/docs.py b/djangoproject/urls/docs.py
index 556861af40..5979c0aa65 100644
--- a/djangoproject/urls/docs.py
+++ b/djangoproject/urls/docs.py
@@ -3,6 +3,7 @@
 from django.contrib.sitemaps.views import sitemap
 from django.http import HttpResponse
 from django.urls import include, path
+from django.views.generic import TemplateView
 
 from docs.models import DocumentRelease
 from docs.sitemaps import DocsSitemap
@@ -55,6 +56,12 @@ def __setitem__(key, value):
             "google-site-verification: google79eabba6bf6fd6d3.html"
         ),
     ),
+    path(
+        ".well-known/security.txt",
+        TemplateView.as_view(
+            template_name="well-known/security.txt", content_type="text/plain"
+        ),
+    ),
     # This just exists to make sure we can proof that the error pages work
     # under both hostnames.
     path("", include("legacy.urls")),
diff --git a/djangoproject/urls/www.py b/djangoproject/urls/www.py
index 22edfa7361..4e3125e079 100644
--- a/djangoproject/urls/www.py
+++ b/djangoproject/urls/www.py
@@ -136,6 +136,12 @@
         cache_page(60 * 60 * 6)(sitemap_views.sitemap),
         {"sitemaps": sitemaps},
     ),
+    path(
+        ".well-known/security.txt",
+        TemplateView.as_view(
+            template_name="well-known/security.txt", content_type="text/plain"
+        ),
+    ),
     path("weblog/", include("blog.urls")),
     path("download/", include("releases.urls")),
     path("svntogit/", include("svntogit.urls")),
diff --git a/docs/tests/test_views.py b/docs/tests/test_views.py
index fb5a94742d..6e0925fc25 100644
--- a/docs/tests/test_views.py
+++ b/docs/tests/test_views.py
@@ -1,3 +1,6 @@
+import re
+import warnings
+from datetime import datetime, timedelta
 from http import HTTPStatus
 
 from django.contrib.sites.models import Site
@@ -268,3 +271,35 @@ def test_sitemap_404(self):
         self.assertEqual(
             response.context["exception"], "No sitemap available for section: 'xx'"
         )
+
+
+class SecurityTxtTests(TestCase):
+    """
+    Tests for the security.txt file.
+    """
+
+    def test_security_txt(self):
+        """
+        The security.txt file should be reachable at the expected URL.
+        """
+        response = self.client.get("/.well-known/security.txt")
+        self.assertEqual(response.status_code, HTTPStatus.OK)
+        self.assertEqual(response["Content-Type"], "text/plain")
+
+        match = re.search(
+            "^Expires: (.*)$", response.content.decode("utf-8"), flags=re.MULTILINE
+        )
+        if match is None:
+            self.fail("No Expires line found in security.txt")
+        else:
+            expires = match[1]
+
+        expires_date = datetime.fromisoformat(expires).date()
+
+        if expires_date < datetime.now().date() - timedelta(days=15):
+            warnings.warn(
+                "The djangoproject/templates/well-known/security.txt file is"
+                " close to expiring. Please update the 'Expires' line to confirm"
+                " the contents are still accurate.",
+                category=UserWarning,
+            )