diff --git a/lake-manifest.json b/lake-manifest.json
index f316699..90985c0 100644
--- a/lake-manifest.json
+++ b/lake-manifest.json
@@ -5,17 +5,17 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "8f9d9cff6bd728b17a24e163c9402775d9e6a365",
+   "rev": "5c8398df528176d9c87ccd9226ba8f7c8852d59c",
    "name": "mathlib",
    "manifestFile": "lake-manifest.json",
-   "inputRev": "v4.28.0",
+   "inputRev": "v4.29.0-rc6",
    "inherited": false,
    "configFile": "lakefile.lean"},
   {"url": "https://github.com/leanprover-community/plausible",
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "55c8532eb21ec9f6d565d51d96b8ca50bd1fbef3",
+   "rev": "e84e3e16aea6b72cc5d311ca1bb25caad417e162",
    "name": "plausible",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
@@ -35,7 +35,7 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "85b59af46828c029a9168f2f9c35119bd0721e6e",
+   "rev": "f207d9fcf0cef00ba79962a33ef156061914d9c7",
    "name": "importGraph",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
@@ -45,17 +45,17 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "be3b2e63b1bbf496c478cef98b86972a37c1417d",
+   "rev": "2e58165a9dcdca9837b666528f974299ee1a51cc",
    "name": "proofwidgets",
    "manifestFile": "lake-manifest.json",
-   "inputRev": "v0.0.87",
+   "inputRev": "v0.0.92",
    "inherited": true,
    "configFile": "lakefile.lean"},
   {"url": "https://github.com/leanprover-community/aesop",
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "f642a64c76df8ba9cb53dba3b919425a0c2aeaf1",
+   "rev": "c3361708f266893de5d1769192b60d4b1831f2bb",
    "name": "aesop",
    "manifestFile": "lake-manifest.json",
    "inputRev": "master",
@@ -65,7 +65,7 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "b8f98e9087e02c8553945a2c5abf07cec8e798c3",
+   "rev": "221e8088e3a066b8676dc471ff10638cf1c10835",
    "name": "Qq",
    "manifestFile": "lake-manifest.json",
    "inputRev": "master",
@@ -75,7 +75,7 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "495c008c3e3f4fb4256ff5582ddb3abf3198026f",
+   "rev": "bd58e3506632241b59e406902d5e42b73cdeccce",
    "name": "batteries",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
@@ -85,10 +85,10 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover",
-   "rev": "4f10f47646cb7d5748d6f423f4a07f98f7bbcc9e",
+   "rev": "3de531c1135f5e3a01f3ac04830996fda476b28e",
    "name": "Cli",
    "manifestFile": "lake-manifest.json",
-   "inputRev": "v4.28.0",
+   "inputRev": "v4.29.0-rc6",
    "inherited": true,
    "configFile": "lakefile.toml"}],
  "name": "ExtTreeMapLemmas",
diff --git a/lakefile.lean b/lakefile.lean
index 69e2925..1e5b426 100644
--- a/lakefile.lean
+++ b/lakefile.lean
@@ -4,7 +4,7 @@ open System Lake DSL
 
 package ExtTreeMapLemmas where version := v!"0.1.0"
 
-require "leanprover-community" / mathlib @ git "v4.28.0"
+require "leanprover-community" / mathlib @ git "v4.29.0-rc6"
 
 @[default_target]
 lean_lib ExtTreeMapLemmas
diff --git a/lean-toolchain b/lean-toolchain
index ea6ca7f..bf71885 100644
--- a/lean-toolchain
+++ b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:v4.28.0
\ No newline at end of file
+leanprover/lean4:v4.29.0-rc6
\ No newline at end of file