diff --git a/matrix-synapse.spec b/matrix-synapse.spec
index c26ddec..c0947cf 100644
--- a/matrix-synapse.spec
+++ b/matrix-synapse.spec
@@ -1,8 +1,8 @@
 %global srcname synapse
 
 # Version suffix in URL when building release candidates
-%global rcx %{nil}
-%global ghversion 1.36.0
+%global rcx rc1
+%global ghversion 1.37.0
 
 %{?python_enable_dependency_generator}
 
@@ -89,7 +89,7 @@ echo %{rcv}
 %autosetup -p1 -n %{srcname}-%{ghversion}%{rcx}
 
 # Worlaround fedora not having the right version of python crypto yet.
-sed --debug -i "s/cryptography>=3.4.7/cryptography>=3.2.1/" synapse/python_dependencies.py
+sed --debug -i "s/cryptography>=3.4.7/cryptography>=3.4.6/" synapse/python_dependencies.py
 
 # We don't support the built-in client so remove all the bundled JS.
 rm -rf synapse/static