diff --git a/CONTRIBUTORS.rst b/CONTRIBUTORS.rst
index 3ab939c27..64a901d12 100644
--- a/CONTRIBUTORS.rst
+++ b/CONTRIBUTORS.rst
@@ -112,6 +112,7 @@ Listed in alphabetical order.
   Diane Chen               `@purplediane`_               @purplediane88
   Dónal Adams              `@epileptic-fish`_
   Dong Huynh               `@trungdong`_
+  Duda Nogueira            `@dudanogueira`_              @dudanogueira
   Emanuel Calso            `@bloodpet`_                  @bloodpet
   Eraldo Energy            `@eraldo`_
   Eric Groom               `@ericgroom`_
@@ -283,6 +284,7 @@ Listed in alphabetical order.
 .. _@dezoito: https://github.com/dezoito
 .. _@dhepper: https://github.com/dhepper
 .. _@dot2dotseurat: https://github.com/dot2dotseurat
+.. _@dudanogueira: https://github.com/dudanogueira
 .. _@dsclementsen: https://github.com/dsclementsen
 .. _@guilherme1guy: https://github.com/guilherme1guy
 .. _@durkode: https://github.com/durkode
diff --git a/{{cookiecutter.project_slug}}/config/settings/local.py b/{{cookiecutter.project_slug}}/config/settings/local.py
index 015d8aff8..21e6a8dfc 100644
--- a/{{cookiecutter.project_slug}}/config/settings/local.py
+++ b/{{cookiecutter.project_slug}}/config/settings/local.py
@@ -68,7 +68,7 @@ if env("USE_DOCKER") == "yes":
     import socket
 
     hostname, _, ips = socket.gethostbyname_ex(socket.gethostname())
-    INTERNAL_IPS += [ip[:-1] + "1" for ip in ips]
+    INTERNAL_IPS += [".".join(ip.split(".")[:-1] + ["1"]) for ip in ips]
 {%- endif %}
 
 # django-extensions