diff --git a/matrix-synapse.spec b/matrix-synapse.spec
index 2ead407..ee47ac4 100644
--- a/matrix-synapse.spec
+++ b/matrix-synapse.spec
@@ -2,7 +2,7 @@
 
 # Version suffix in URL when building release candidates
 %global rcx %{nil}
-%global ghversion 1.64.0
+%global ghversion 1.66.0
 
 %{?python_enable_dependency_generator}