diff --git a/.env b/.env
index b1a2ea1..c46e6a6 100644
--- a/.env
+++ b/.env
@@ -19,9 +19,10 @@ DB_ENGINE=django.db.backends.postgresql
 
 # Linux (uid 1000 gid 1000)
 
-PYTHON_TAG=3.7-dev-0.7.0
+PYTHON_TAG=3.9-dev-0.7.0
+#PYTHON_TAG=3.8-dev-0.7.0
+#PYTHON_TAG=3.7-dev-0.7.0
 #PYTHON_TAG=3.6-dev-0.7.0
-#PYTHON_TAG=3.5-dev-0.7.0
 
 # macOS (uid 501 gid 20)
 
diff --git a/.github/workflows/workflow.yml b/.github/workflows/workflow.yml
index 9d2ba6a..2af5c85 100644
--- a/.github/workflows/workflow.yml
+++ b/.github/workflows/workflow.yml
@@ -14,7 +14,7 @@ jobs:
   test:
     strategy:
       matrix:
-        version: [ 3.7,3.6,3.5 ]
+        version: [ 3.9,3.8,3.7,3.6 ]
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2