diff --git a/.pullapprove.yml b/.pullapprove.yml
index bf30ea1439..56aa0126cc 100644
--- a/.pullapprove.yml
+++ b/.pullapprove.yml
@@ -6,10 +6,11 @@ requirements:
 
 # Disallow approval of PRs still under development
 always_pending:
-  title_regex: 'WIP'
+  title_regex: '(WIP|RFC)'
   labels:
     - do-not-merge
     - wip
+    - rfc
   explanation: 'Work in progress - do not merge'
 
 group_defaults:
@@ -26,6 +27,6 @@ group_defaults:
 
 groups:
   approvers:
-    required: 1
+    required: 2
     teams:
       - builder