diff --git a/daemon/Dockerfile b/daemon/Dockerfile
index c5c7191c09d08fdc6dc4b4220ffa1b193e551883..be9a5d7423fbbcb162de962286a28c4b829cd2ed 100644
--- a/daemon/Dockerfile
+++ b/daemon/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.6.12-slim-buster
+FROM python:3.9.0-slim-buster
 
 
 LABEL authors="Patrick Jentsch <p.jentsch@uni-bielefeld.de>, Stephan Porada <sporada@uni-bielefeld.de>"
diff --git a/web/Dockerfile b/web/Dockerfile
index 216964cc6e1e99ac840da06d193773f01ea612b4..1b41b48a0ad48dff4d0b0e431ed75821b3ab7b9f 100644
--- a/web/Dockerfile
+++ b/web/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.6.12-slim-buster
+FROM python:3.9.0-slim-buster
 
 
 LABEL authors="Patrick Jentsch <p.jentsch@uni-bielefeld.de>, Stephan Porada <sporada@uni-bielefeld.de>"