diff --git a/lake-manifest.json b/lake-manifest.json
index 433105a..a4cd4bc 100644
--- a/lake-manifest.json
+++ b/lake-manifest.json
@@ -15,7 +15,7 @@
    "type": "git",
    "subDir": null,
    "scope": "",
-   "rev": "4756e0fc48acce0cc808df0ad149de5973240df6",
+   "rev": "fc871f7039ac6d8ab993335bb35aba43286004a0",
    "name": "batteries",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
diff --git a/lean-toolchain b/lean-toolchain
index beeaa69..b1b73fe 100644
--- a/lean-toolchain
+++ b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:v4.12.0
\ No newline at end of file
+leanprover/lean4:v4.13.0-rc1
\ No newline at end of file