diff --git a/lake-manifest.json b/lake-manifest.json
index f5a1aa2..496c99e 100644
--- a/lake-manifest.json
+++ b/lake-manifest.json
@@ -5,37 +5,37 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover",
-   "rev": "1e4a5c34bfa5e44ab37dd64de635db59572f627b",
+   "rev": "2679356b3372d52f76d6d984eef16cade7956e0c",
    "name": "«doc-gen4»",
    "manifestFile": "lake-manifest.json",
-   "inputRev": "v4.25.0",
+   "inputRev": "v4.26.0-rc2",
    "inherited": false,
    "configFile": "lakefile.lean"},
   {"url": "https://github.com/leanprover-community/mathlib4",
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "6a54a80825b060ab20dc31751ebdce78b3a3b518",
+   "rev": "d5c9558e75342a10d6321e6a8c798a14f68ae23c",
    "name": "mathlib",
    "manifestFile": "lake-manifest.json",
-   "inputRev": "v4.26.0-rc1",
+   "inputRev": "v4.26.0-rc2",
    "inherited": false,
    "configFile": "lakefile.lean"},
   {"url": "https://github.com/leanprover/lean4-cli",
    "type": "git",
    "subDir": null,
-   "scope": "leanprover",
-   "rev": "00fad25fa9bedece1f1f988ab9c180dfe3d535b3",
+   "scope": "",
+   "rev": "7e1ced9e049a4fab2508980ec4877ca9c46dffc9",
    "name": "Cli",
    "manifestFile": "lake-manifest.json",
-   "inputRev": "v4.26.0-rc1",
+   "inputRev": "main",
    "inherited": true,
    "configFile": "lakefile.toml"},
   {"url": "https://github.com/fgdorais/lean4-unicode-basic",
    "type": "git",
    "subDir": null,
    "scope": "",
-   "rev": "d1fa8a8d413e7b3b503ef51445f680c33e56bb6a",
+   "rev": "106abeac8ee53a047b238976281b0e5017bded8a",
    "name": "UnicodeBasic",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
@@ -65,7 +65,7 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "ec4a54b5308c1f46b4b52a9c62fb67d193aa0972",
+   "rev": "74835c84b38e4070b8240a063c6417c767e551ae",
    "name": "plausible",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
@@ -85,7 +85,7 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "7ff87023a8e1b358d2d01c1bc56b040a60609577",
+   "rev": "6e3bb4bf31f731ab28891fe229eb347ec7d5dad3",
    "name": "importGraph",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
@@ -95,17 +95,17 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "894c511d39bf442636bcba085245a1cf2bbdf665",
+   "rev": "2aaad968dd10a168b644b6a5afd4b92496af4710",
    "name": "proofwidgets",
    "manifestFile": "lake-manifest.json",
-   "inputRev": "v0.0.81",
+   "inputRev": "v0.0.82",
    "inherited": true,
    "configFile": "lakefile.lean"},
   {"url": "https://github.com/leanprover-community/aesop",
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "c00943d5ff28c6dc623dbc24f8d659a9d3a3d29a",
+   "rev": "9c70abdd9215b76019340fad65138e2e8d21843e",
    "name": "aesop",
    "manifestFile": "lake-manifest.json",
    "inputRev": "master",
@@ -115,7 +115,7 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "1be06a278c3c249edafb722bfb278622024929d8",
+   "rev": "a31845b5557fd5e47d52b9e2977a1b0eff3c38c3",
    "name": "Qq",
    "manifestFile": "lake-manifest.json",
    "inputRev": "master",
@@ -125,7 +125,7 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "c278d4e94fe43bc38da4966795dc0c72538e68ab",
+   "rev": "afe9302d9243cee630b0be95322b38b90342ddbf",
    "name": "batteries",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
diff --git a/lakefile.lean b/lakefile.lean
index f9405e5..4aee421 100644
--- a/lakefile.lean
+++ b/lakefile.lean
@@ -2,8 +2,8 @@ import Lake
 
 open Lake DSL
 
-require "leanprover-community" / "mathlib" @ git "v4.26.0-rc1"
-require "leanprover" / "doc-gen4" @ git "v4.25.0" -- `v4.26.0-rc1` has a broken `lakefile`
+require "leanprover-community" / "mathlib" @ git "v4.26.0-rc2"
+require "leanprover" / "doc-gen4" @ git "v4.26.0-rc2"
 
 abbrev algorithmOnlyLinters : Array LeanOption := #[
   ⟨`linter.mathlibStandardSet, true⟩,
diff --git a/lean-toolchain b/lean-toolchain
index bd7c1fd..be1fbc3 100644
--- a/lean-toolchain
+++ b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:v4.26.0-rc1
+leanprover/lean4:v4.26.0-rc2