diff --git a/MODULE.bazel b/MODULE.bazel
index b9a0da82ef..bd8efa4c88 100644
--- a/MODULE.bazel
+++ b/MODULE.bazel
@@ -28,7 +28,7 @@ bazel_dep(name = "gazelle", version = "0.51.3")
 bazel_dep(name = "stardoc", version = "0.8.1")
 bazel_dep(name = "rules_android", version = "0.7.3")
 bazel_dep(name = "grpc", version = "1.81.1")
-bazel_dep(name = "rules_swift", version = "4.0.0-rc3")
+bazel_dep(name = "rules_swift", version = "4.0.0-rc4")
 single_version_override(
     module_name = "grpc",
     patch_strip = 1,
diff --git a/x/MODULE.bazel b/x/MODULE.bazel
index 450447e3c2..b81c53532b 100644
--- a/x/MODULE.bazel
+++ b/x/MODULE.bazel
@@ -34,7 +34,7 @@ bazel_dep(name = "gazelle", version = "0.51.3")
 bazel_dep(name = "stardoc", version = "0.8.1")
 bazel_dep(name = "rules_android", version = "0.7.3")
 bazel_dep(name = "grpc", version = "1.81.1")
-bazel_dep(name = "rules_swift", version = "4.0.0-rc3")
+bazel_dep(name = "rules_swift", version = "4.0.0-rc4")
 single_version_override(
     module_name = "grpc",
     patch_strip = 1,