diff --git a/Dockerfile b/Dockerfile
index ef04fb3..9746560 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3-alpine
+FROM python:3.8-alpine
 
 ENV PYTHONUNBUFFERED 1
 ENV DJANGO_ALLOW_ASYNC_UNSAFE 1
diff --git a/requirements.txt b/requirements.txt
index 49db7a5..f1e2197 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-Django~=3.1
+Django~=3.0
 django-bootstrap-datepicker-plus~=3.0
 django-cas-server~=1.2
 django-crispy-forms~=1.9