diff --git a/lake-manifest.json b/lake-manifest.json
index 23362c7d9..4f88de77e 100644
--- a/lake-manifest.json
+++ b/lake-manifest.json
@@ -5,10 +5,10 @@
    "type": "git",
    "subDir": null,
    "scope": "",
-   "rev": "55b60c67993b3a6f090d6de61f0b3800edcfa633",
+   "rev": "d87691ea2cae3c5ddd940ab453c6dad66c6f3f00",
    "name": "mathlib",
    "manifestFile": "lake-manifest.json",
-   "inputRev": "nightly-testing-2026-07-08",
+   "inputRev": "nightly-testing-2026-07-09",
    "inherited": false,
    "configFile": "lakefile.lean"},
   {"url": "https://github.com/leanprover-community/plausible",
@@ -75,7 +75,7 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "44bdf79647d66b4d5c21af02d3e3b9658d60bec8",
+   "rev": "adad105d140e5655d3a6330ac6c8873114c340c3",
    "name": "batteries",
    "manifestFile": "lake-manifest.json",
    "inputRev": "nightly-testing",
diff --git a/lakefile.toml b/lakefile.toml
index a505de93a..873961b81 100644
--- a/lakefile.toml
+++ b/lakefile.toml
@@ -18,7 +18,7 @@ weak.linter.unicodeLinter = false
 [[require]]
 name = "mathlib"
 git = "https://github.com/leanprover-community/mathlib4-nightly-testing"
-rev = "nightly-testing-2026-07-08"
+rev = "nightly-testing-2026-07-09"
 
 [[lean_lib]]
 name = "Cslib"
diff --git a/lean-toolchain b/lean-toolchain
index b2370f15b..db9e73c77 100644
--- a/lean-toolchain
+++ b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:nightly-2026-07-08
+leanprover/lean4:nightly-2026-07-09