diff --git a/roles/matrix-nginx-proxy/templates/nginx/nginx.conf.j2 b/roles/matrix-nginx-proxy/templates/nginx/nginx.conf.j2
index 9ee72c879..3db5a40c8 100644
--- a/roles/matrix-nginx-proxy/templates/nginx/nginx.conf.j2
+++ b/roles/matrix-nginx-proxy/templates/nginx/nginx.conf.j2
@@ -18,6 +18,8 @@ events {
 	worker_connections 1024;
 }
 
+# "PCRE JIT can speed up processing of regular expressions significantly."
+pcre_jit on;
 
 http {
 	proxy_temp_path /tmp/proxy_temp;