1 files changed, 8 insertions, 1 deletions
diff --git a/synapse/python_dependencies.py b/synapse/python_dependencies.py
index 0a6043ae8d..e0a7a19777 100644
--- a/synapse/python_dependencies.py
+++ b/synapse/python_dependencies.py
@@ -40,7 +40,14 @@ REQUIREMENTS = {
 CONDITIONAL_REQUIREMENTS = {
     "web_client": {
         "matrix_angular_sdk>=0.6.8": ["syweb>=0.6.8"],
-    }
+    },
+    "preview_url": {
+        "netaddr>=0.7.18": ["netaddr"],
+    },
+    "email.enable_notifs": {
+        "Jinja2>=2.8": ["Jinja2>=2.8"],
+        "bleach>=1.4.2": ["bleach>=1.4.2"],
+    },
 }