diff --git a/tools/donate-cpu-server.py b/tools/donate-cpu-server.py
index 30304e19f9b..52c97466e8a 100755
--- a/tools/donate-cpu-server.py
+++ b/tools/donate-cpu-server.py
@@ -27,7 +27,7 @@
 # changes)
 SERVER_VERSION = "1.3.16"
 
-OLD_VERSION = '2.3'
+OLD_VERSION = '2.4'
 
 
 # Set up logging