diff --git a/setup.py b/setup.py
index 043cd044a781e73b1d55ed992193e7101763dff6..3249e87a9649b949fd092be40bdcec5b0f19f36b 100755
--- a/setup.py
+++ b/setup.py
@@ -33,7 +33,7 @@ setup(
     install_requires=[
         "syutil==0.0.2",
         "matrix_angular_sdk==0.6.0",
-        "Twisted>=14.0.0",
+        "Twisted==14.0.2",
         "service_identity>=1.0.0",
         "pyopenssl>=0.14",
         "pyyaml",
diff --git a/synapse/python_dependencies.py b/synapse/python_dependencies.py
index 4182ad990f1d098907dfe54d01004ff14dbdccb5..826a36f203ab9c40a48bf58e889cb7dc298accd1 100644
--- a/synapse/python_dependencies.py
+++ b/synapse/python_dependencies.py
@@ -6,7 +6,7 @@ logger = logging.getLogger(__name__)
 REQUIREMENTS = {
     "syutil==0.0.2": ["syutil"],
     "matrix_angular_sdk==0.6.0": ["syweb>=0.6.0"],
-    "Twisted>=14.0.0": ["twisted>=14.0.0"],
+    "Twisted==14.0.2": ["twisted==14.0.2"],
     "service_identity>=1.0.0": ["service_identity>=1.0.0"],
     "pyopenssl>=0.14": ["OpenSSL>=0.14"],
     "pyyaml": ["yaml"],