diff --git a/extension.json b/extension.json
index 3ed339c7..333c2d11 100644
--- a/extension.json
+++ b/extension.json
@@ -12,7 +12,7 @@
 	"license-name": "GPL-2.0-or-later",
 	"type": "parserhook",
 	"requires": {
-		"MediaWiki": ">= 1.35.0"
+		"MediaWiki": ">= 1.39"
 	},
 	"config": {
 		"PFEnableStringFunctions": {