diff --git a/template/python27-flask/index.py b/template/python27-flask/index.py
index 9b99405..983ef34 100644
--- a/template/python27-flask/index.py
+++ b/template/python27-flask/index.py
@@ -6,6 +6,18 @@
 
 app = Flask(__name__)
 
+@app.before_request
+def fix_transfer_encoding():
+    """
+    Sets the "wsgi.input_terminated" environment flag, thus enabling
+    Werkzeug to pass chunked requests as streams.  The gunicorn server
+    should set this, but it's not yet been implemented.
+    """
+
+    transfer_encoding = request.headers.get("Transfer-Encoding", None)
+    if transfer_encoding == u"chunked":
+        request.environ["wsgi.input_terminated"] = True
+
 @app.route("/", defaults={"path": ""}, methods=["POST", "GET"])
 @app.route("/<path:path>", methods=["POST", "GET"])
 def main_route(path):
diff --git a/template/python3-flask-armhf/index.py b/template/python3-flask-armhf/index.py
index bc9ac57..c7c785f 100644
--- a/template/python3-flask-armhf/index.py
+++ b/template/python3-flask-armhf/index.py
@@ -8,6 +8,18 @@
 
 app = Flask(__name__)
 
+@app.before_request
+def fix_transfer_encoding():
+    """
+    Sets the "wsgi.input_terminated" environment flag, thus enabling
+    Werkzeug to pass chunked requests as streams.  The gunicorn server
+    should set this, but it's not yet been implemented.
+    """
+
+    transfer_encoding = request.headers.get("Transfer-Encoding", None)
+    if transfer_encoding == u"chunked":
+        request.environ["wsgi.input_terminated"] = True
+
 @app.route("/", defaults={"path": ""}, methods=["POST", "GET"])
 @app.route("/<path:path>", methods=["POST", "GET"])
 def main_route(path):
diff --git a/template/python3-flask/index.py b/template/python3-flask/index.py
index bc9ac57..c7c785f 100644
--- a/template/python3-flask/index.py
+++ b/template/python3-flask/index.py
@@ -8,6 +8,18 @@
 
 app = Flask(__name__)
 
+@app.before_request
+def fix_transfer_encoding():
+    """
+    Sets the "wsgi.input_terminated" environment flag, thus enabling
+    Werkzeug to pass chunked requests as streams.  The gunicorn server
+    should set this, but it's not yet been implemented.
+    """
+
+    transfer_encoding = request.headers.get("Transfer-Encoding", None)
+    if transfer_encoding == u"chunked":
+        request.environ["wsgi.input_terminated"] = True
+
 @app.route("/", defaults={"path": ""}, methods=["POST", "GET"])
 @app.route("/<path:path>", methods=["POST", "GET"])
 def main_route(path):