diff --git a/.scalafmt.conf b/.scalafmt.conf
index 2e440bd..e66078a 100644
--- a/.scalafmt.conf
+++ b/.scalafmt.conf
@@ -1,10 +1,17 @@
 version = 3.7.17
 encoding = "UTF-8"
 runner.dialect = "scala213source3"
-maxColumn = 100
+fileOverride {
+  "glob:**/core/src/main/scala-3/**" {
+    runner.dialect = scala3
+  }
+  "glob:**/core/src/test/scala-3/**" {
+    runner.dialect = scala3
+  }
+}
 
 project.git = true
-
+maxColumn = 100
 align.openParenCallSite = false
 align.openParenDefnSite = false
 align.tokens = [