1 files changed, 8 insertions, 0 deletions
diff --git a/synapse/__init__.py b/synapse/__init__.py
index 5bc24863d9..119359be68 100644
--- a/synapse/__init__.py
+++ b/synapse/__init__.py
@@ -17,10 +17,18 @@
 """ This is a reference implementation of a Matrix home server.
 """
 
+import sys
+
+# Check that we're not running on an unsupported Python version.
+if sys.version_info < (3, 5):
+    print("Synapse requires Python 3.5 or above.")
+    sys.exit(1)
+
 try:
     from twisted.internet import protocol
     from twisted.internet.protocol import Factory
     from twisted.names.dns import DNSDatagramProtocol
+
     protocol.Factory.noisy = False
     Factory.noisy = False
     DNSDatagramProtocol.noisy = False