From faee49a8af262839036dc85a3322ef929d157948 Mon Sep 17 00:00:00 2001
From: "github-actions[bot]"
 <41898282+github-actions[bot]@users.noreply.github.com>
Date: Tue, 23 Jun 2026 07:21:48 +0000
Subject: [PATCH] chore: bump mathlib to b438433: fix(cache): carry cache
 misses across 'get' layers instead of using file existence as a proxy for
 'done' (#40817) (2026-06-23)

---
 lake-manifest.json | 4 ++--
 lakefile.toml      | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/lake-manifest.json b/lake-manifest.json
index ea136596..13eddb75 100644
--- a/lake-manifest.json
+++ b/lake-manifest.json
@@ -5,10 +5,10 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "69aaaa313f441d9ce4fe99f374f20820116a8c92",
+   "rev": "b4384330e5b9d7268e11d3136e669205994fa74a",
    "name": "mathlib",
    "manifestFile": "lake-manifest.json",
-   "inputRev": "69aaaa313f441d9ce4fe99f374f20820116a8c92",
+   "inputRev": "b4384330e5b9d7268e11d3136e669205994fa74a",
    "inherited": false,
    "configFile": "lakefile.lean"},
   {"url": "https://github.com/leanprover/verso",
diff --git a/lakefile.toml b/lakefile.toml
index bd3b6407..5a2afd73 100644
--- a/lakefile.toml
+++ b/lakefile.toml
@@ -17,7 +17,7 @@ rev = "main"
 [[require]]
 name = "mathlib"
 scope = "leanprover-community"
-rev = "69aaaa313f441d9ce4fe99f374f20820116a8c92"
+rev = "b4384330e5b9d7268e11d3136e669205994fa74a"
 
 [[lean_lib]]
 name = "LeanMachineLearning"