diff --git a/build.gradle b/build.gradle
index 97df94c..672783c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -19,7 +19,7 @@ group 'com.digitalsanctuary.cf.turnstile'
 description = 'SpringBoot Cloudflare Turnstile Library'
 
 ext {
-    springBootVersion = '3.5.7'
+    springBootVersion = '4.0.0'
     lombokVersion = '1.18.42'
 }