diff --git a/docs/source/conf.py b/docs/source/conf.py
index e79431a6f9..a5814e7323 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -31,7 +31,7 @@
 release = "9.5.0-dev"
 
 # PROJ-data version
-data_version = "1.17"
+data_version = "1.18"
 
 today_date = date.today()
 # today_date = date(Y, M, D)  # or use a specific date