diff --git a/lake-manifest.json b/lake-manifest.json
index 9315377f..50c543d3 100644
--- a/lake-manifest.json
+++ b/lake-manifest.json
@@ -5,10 +5,10 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "9a9483a92959bc92bd6a60176dd1fe597298c1f8",
+   "rev": "fbf0644640719705c7dbfbf3fa9df21844858fd6",
    "name": "mathlib",
    "manifestFile": "lake-manifest.json",
-   "inputRev": "9a9483a92959bc92bd6a60176dd1fe597298c1f8",
+   "inputRev": "fbf0644640719705c7dbfbf3fa9df21844858fd6",
    "inherited": false,
    "configFile": "lakefile.lean"},
   {"url": "https://github.com/leanprover/verso",
diff --git a/lakefile.toml b/lakefile.toml
index 1f203e31..a32ac5d5 100644
--- a/lakefile.toml
+++ b/lakefile.toml
@@ -17,7 +17,7 @@ rev = "main"
 [[require]]
 name = "mathlib"
 scope = "leanprover-community"
-rev = "9a9483a92959bc92bd6a60176dd1fe597298c1f8"
+rev = "fbf0644640719705c7dbfbf3fa9df21844858fd6"
 
 [[lean_lib]]
 name = "LeanMachineLearning"