diff --git a/scala/BUILD b/scala/BUILD
index 92acfcae..a882a311 100644
--- a/scala/BUILD
+++ b/scala/BUILD
@@ -69,7 +69,7 @@ alias(
     visibility = ["//visibility:public"],
 )
 
-scala3 = "3.3.1"
+scala3 = "3.4.0-RC1"
 
 scala3_global_scalacopts = [
     "-deprecation",
diff --git a/scala3/repositories.bzl b/scala3/repositories.bzl
index e4286e33..aaa9bc10 100644
--- a/scala3/repositories.bzl
+++ b/scala3/repositories.bzl
@@ -101,17 +101,17 @@ def _scala3_toolchain_repository_impl(repository_ctx):
     # TODO load maven deps, like `rules_scala_toolchain_deps_repositories` does.
     # `repository_ctx.attr.scala_version` should be used to resolve deps and
     # determine the full version
-    scala_version = "3.3.2-RC1"
+    scala_version = "3.4.0-RC1"
     compiler_bridge = repository_ctx.attr.compiler_bridge or "@scala3_sbt_bridge//jar"
 
     compiler_classpath = repository_ctx.attr.compiler_classpath or [
         "@scala3_compiler//jar",
         "@scala3_interfaces//jar",
-        "@scala_tasty_core_3//jar",
+        "@org_scala_sbt_compiler_interface//jar",
         "@scala_asm//jar",
+        "@scala_tasty_core_3//jar",
         "@scala3_library//jar",
         "@scala_library_2_13//jar",
-        "@org_scala_sbt_compiler_interface//jar",
     ]
 
     runtime_classpath = repository_ctx.attr.runtime_classpath or [