diff --git a/template/python27-flask/Dockerfile b/template/python27-flask/Dockerfile
index 29f168d..bfa24e7 100644
--- a/template/python27-flask/Dockerfile
+++ b/template/python27-flask/Dockerfile
@@ -1,4 +1,4 @@
-FROM openfaas/of-watchdog:0.7.2 as watchdog
+FROM openfaas/of-watchdog:0.7.7 as watchdog
 FROM python:2.7-alpine
 
 COPY --from=watchdog /fwatchdog /usr/bin/fwatchdog
diff --git a/template/python3-flask-armhf/Dockerfile b/template/python3-flask-armhf/Dockerfile
index 276425c..65c2774 100644
--- a/template/python3-flask-armhf/Dockerfile
+++ b/template/python3-flask-armhf/Dockerfile
@@ -1,4 +1,4 @@
-FROM openfaas/of-watchdog:0.7.2 as watchdog
+FROM openfaas/of-watchdog:0.7.7 as watchdog
 FROM armhf/python:3.6-alpine
 
 ARG ADDITIONAL_PACKAGE
@@ -6,7 +6,7 @@ ARG ADDITIONAL_PACKAGE
 COPY --from=watchdog /fwatchdog /usr/bin/fwatchdog
 RUN chmod +x /usr/bin/fwatchdog
 
-RUN apk --no-cache add musl-dev gcc make openssl-dev libffi-dev
+RUN apk --no-cache add openssl-dev ${ADDITIONAL_PACKAGE}
 
 # Add non root user
 RUN addgroup -S app && adduser app -S -G app
diff --git a/template/python3-flask-armhf/index.py b/template/python3-flask-armhf/index.py
index c7c785f..9c45794 100644
--- a/template/python3-flask-armhf/index.py
+++ b/template/python3-flask-armhf/index.py
@@ -3,8 +3,7 @@
 
 from flask import Flask, request
 from function import handler
-#from gevent.wsgi import WSGIServer
-from gevent.pywsgi import WSGIServer
+from waitress import serve
 
 app = Flask(__name__)
 
@@ -27,7 +26,4 @@ def main_route(path):
     return ret
 
 if __name__ == '__main__':
-    #app.run(host='0.0.0.0', port=5000, debug=False)
-
-    http_server = WSGIServer(('', 5000), app)
-    http_server.serve_forever()
+    serve(app, host='0.0.0.0', port=5000)
diff --git a/template/python3-flask-armhf/requirements.txt b/template/python3-flask-armhf/requirements.txt
index 4c0baf0..7d8d2a5 100644
--- a/template/python3-flask-armhf/requirements.txt
+++ b/template/python3-flask-armhf/requirements.txt
@@ -1,3 +1,3 @@
 flask
-gevent
+waitress
 
diff --git a/template/python3-flask-debian/Dockerfile b/template/python3-flask-debian/Dockerfile
index 048b637..cb73e74 100644
--- a/template/python3-flask-debian/Dockerfile
+++ b/template/python3-flask-debian/Dockerfile
@@ -1,4 +1,4 @@
-FROM openfaas/of-watchdog:0.7.2 as watchdog
+FROM openfaas/of-watchdog:0.7.7 as watchdog
 FROM python:3.7-slim-buster
 
 COPY --from=watchdog /fwatchdog /usr/bin/fwatchdog
diff --git a/template/python3-flask-debian/index.py b/template/python3-flask-debian/index.py
index 62d1379..9c45794 100644
--- a/template/python3-flask-debian/index.py
+++ b/template/python3-flask-debian/index.py
@@ -3,8 +3,7 @@
 
 from flask import Flask, request
 from function import handler
-#from gevent.wsgi import WSGIServer
-from gevent.pywsgi import WSGIServer
+from waitress import serve
 
 app = Flask(__name__)
 
@@ -27,6 +26,4 @@ def main_route(path):
     return ret
 
 if __name__ == '__main__':
-
-    http_server = WSGIServer(('0.0.0.0', 5000), app)
-    http_server.serve_forever()
+    serve(app, host='0.0.0.0', port=5000)
diff --git a/template/python3-flask-debian/requirements.txt b/template/python3-flask-debian/requirements.txt
index 4c0baf0..7d8d2a5 100644
--- a/template/python3-flask-debian/requirements.txt
+++ b/template/python3-flask-debian/requirements.txt
@@ -1,3 +1,3 @@
 flask
-gevent
+waitress
 
diff --git a/template/python3-flask/Dockerfile b/template/python3-flask/Dockerfile
index 7af655e..9198c04 100644
--- a/template/python3-flask/Dockerfile
+++ b/template/python3-flask/Dockerfile
@@ -1,4 +1,4 @@
-FROM openfaas/of-watchdog:0.7.2 as watchdog
+FROM openfaas/of-watchdog:0.7.7 as watchdog
 FROM python:3.7-alpine
 
 COPY --from=watchdog /fwatchdog /usr/bin/fwatchdog
@@ -7,7 +7,7 @@ RUN chmod +x /usr/bin/fwatchdog
 ARG ADDITIONAL_PACKAGE
 # Alternatively use ADD https:// (which will not be cached by Docker builder)
 
-RUN apk --no-cache add musl-dev gcc make ${ADDITIONAL_PACKAGE}
+RUN apk --no-cache add openssl-dev ${ADDITIONAL_PACKAGE}
 
 # Add non root user
 RUN addgroup -S app && adduser app -S -G app
diff --git a/template/python3-flask/index.py b/template/python3-flask/index.py
index c7c785f..9c45794 100644
--- a/template/python3-flask/index.py
+++ b/template/python3-flask/index.py
@@ -3,8 +3,7 @@
 
 from flask import Flask, request
 from function import handler
-#from gevent.wsgi import WSGIServer
-from gevent.pywsgi import WSGIServer
+from waitress import serve
 
 app = Flask(__name__)
 
@@ -27,7 +26,4 @@ def main_route(path):
     return ret
 
 if __name__ == '__main__':
-    #app.run(host='0.0.0.0', port=5000, debug=False)
-
-    http_server = WSGIServer(('', 5000), app)
-    http_server.serve_forever()
+    serve(app, host='0.0.0.0', port=5000)
diff --git a/template/python3-flask/requirements.txt b/template/python3-flask/requirements.txt
index 4c0baf0..7d8d2a5 100644
--- a/template/python3-flask/requirements.txt
+++ b/template/python3-flask/requirements.txt
@@ -1,3 +1,3 @@
 flask
-gevent
+waitress
 
diff --git a/template/python3-http-armhf/Dockerfile b/template/python3-http-armhf/Dockerfile
index b1f7bcc..642559e 100644
--- a/template/python3-http-armhf/Dockerfile
+++ b/template/python3-http-armhf/Dockerfile
@@ -1,4 +1,4 @@
-FROM openfaas/of-watchdog:0.7.2 as watchdog
+FROM openfaas/of-watchdog:0.7.7 as watchdog
 FROM armhf/python:3.6-alpine
 
 ARG ADDITIONAL_PACKAGE
@@ -43,4 +43,4 @@ ENV upstream_url="http://127.0.0.1:5000"
 
 HEALTHCHECK --interval=5s CMD [ -e /tmp/.lock ] || exit 1
 
-CMD ["fwatchdog"]
\ No newline at end of file
+CMD ["fwatchdog"]
diff --git a/template/python3-http/Dockerfile b/template/python3-http/Dockerfile
index a0349c3..fc08cc0 100644
--- a/template/python3-http/Dockerfile
+++ b/template/python3-http/Dockerfile
@@ -1,4 +1,4 @@
-FROM openfaas/of-watchdog:0.7.2 as watchdog
+FROM openfaas/of-watchdog:0.7.7 as watchdog
 FROM python:3.7-alpine
 
 COPY --from=watchdog /fwatchdog /usr/bin/fwatchdog
@@ -50,4 +50,4 @@ ENV upstream_url="http://127.0.0.1:5000"
 
 HEALTHCHECK --interval=5s CMD [ -e /tmp/.lock ] || exit 1
 
-CMD ["fwatchdog"]
\ No newline at end of file
+CMD ["fwatchdog"]