diff --git a/build.sbt b/build.sbt
index cdaca89..41b45c1 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,7 +1,7 @@
 import java.nio.charset.StandardCharsets
 import org.scalajs.linker.interface.ModuleSplitStyle
 
-val scala33 = "3.3.1"
+val scala33 = "3.4.0"
 
 val tapirVersion = "1.9.7"