diff --git a/manifest.toml b/manifest.toml
index 218bf3c..77b901b 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -68,7 +68,7 @@ ram.runtime = "50M"
     main.allowed = "visitors"
 
     [resources.apt]
-    packages = "gunicorn, python3, python3-venv, libpq-dev, libsasl2-dev, libjpeg-dev, libxml2-dev, libxslt1-dev, libpango1.0-0, postgresql, postgresql-contrib, postgresql-server-dev-all python3-dev"
+    packages = "gunicorn, python3, python3-venv, libpq-dev, libsasl2-dev, libjpeg-dev, libxml2-dev, libxslt1-dev, libpango1.0-0, postgresql, postgresql-contrib, postgresql-server-dev-13"
 
     [resources.database]
     type = "postgresql"
diff --git a/sources/patches/main-001.patch b/sources/patches/main-001.patch
deleted file mode 100644
index c943b3a..0000000
--- a/sources/patches/main-001.patch
+++ /dev/null
@@ -1,11 +0,0 @@
-diff --git a/requirements.txt b/requirements.txt
-index 27c1a5c..a21fd3d 100644
---- a/requirements.txt
-+++ b/requirements.txt
-@@ -1,5 +1,5 @@
- Django>=2.2,<2.3
--psycopg2>=2.8,<2.9
-+psycopg2>=2.9,<3.0
- # To match django-ldapdb version:
- #python-ldap>=3.0,<3.1
- #wsgiref