diff --git a/setup.py b/setup.py
index c790484c7a2faafc70e46d7f6d883988b00a3bc7..16ccc0f1b8767f7b71b07349c18430888d745604 100755
--- a/setup.py
+++ b/setup.py
@@ -48,7 +48,7 @@ setup(
     description="Reference Synapse Home Server",
     install_requires=dependencies['requirements'](include_conditional=True).keys(),
     setup_requires=[
-        "Twisted==15.2.1", # Here to override setuptools_trial's dependency on Twisted>=2.4.0
+        "Twisted>=15.1.0", # Here to override setuptools_trial's dependency on Twisted>=2.4.0
         "setuptools_trial",
         "mock"
     ],
diff --git a/synapse/python_dependencies.py b/synapse/python_dependencies.py
index 534c4a6698c3a399825e9af87fd7852fb4f6dd87..fa06480ad165f83a584d23605caeb9cefd7084ae 100644
--- a/synapse/python_dependencies.py
+++ b/synapse/python_dependencies.py
@@ -19,7 +19,7 @@ logger = logging.getLogger(__name__)
 
 REQUIREMENTS = {
     "syutil>=0.0.7": ["syutil>=0.0.7"],
-    "Twisted==15.2.1": ["twisted==15.2.1"],
+    "Twisted>=15.1.0": ["twisted>=15.1.0"],
     "service_identity>=1.0.0": ["service_identity>=1.0.0"],
     "pyopenssl>=0.14": ["OpenSSL>=0.14"],
     "pyyaml": ["yaml"],