diff --git a/lake-manifest.json b/lake-manifest.json
index b7aa4c7..2cfc3fb 100644
--- a/lake-manifest.json
+++ b/lake-manifest.json
@@ -5,7 +5,7 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover",
-   "rev": "66f1fb4bc256072069767fce52d39480e4524869",
+   "rev": "05d43a2bc773b40ecfdebb32294192a5ef756951",
    "name": "lean4export",
    "manifestFile": "lake-manifest.json",
    "inputRev": "master",
diff --git a/lean-toolchain b/lean-toolchain
index f0e00b3..9532ebf 100644
--- a/lean-toolchain
+++ b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:v4.35.0-rc3
+leanprover/lean4:v4.35.0-rc4