diff --git a/lean-toolchain b/lean-toolchain
index 2210cba4..6c7e31ff 100644
--- a/lean-toolchain
+++ b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:v4.30.0-rc1
+leanprover/lean4:v4.30.0-rc2
diff --git a/test/Mathlib/lake-manifest.json b/test/Mathlib/lake-manifest.json
index 7fc6fc78..d943874b 100644
--- a/test/Mathlib/lake-manifest.json
+++ b/test/Mathlib/lake-manifest.json
@@ -5,17 +5,17 @@
    "type": "git",
    "subDir": null,
    "scope": "",
-   "rev": "0c154d67103f74be3a0f2c509f72ccbf5be9f2a7",
+   "rev": "5450b53e5ddc75d46418fabb605edbf36bd0beb6",
    "name": "mathlib",
    "manifestFile": "lake-manifest.json",
-   "inputRev": "v4.30.0-rc1",
+   "inputRev": "v4.30.0-rc2",
    "inherited": false,
    "configFile": "lakefile.lean"},
   {"url": "https://github.com/leanprover-community/plausible",
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "f449eabb8f7e3feef0366856c20e28a6d2c97ee3",
+   "rev": "86210d4ad1b08b086d0bd638637a75246523dbb8",
    "name": "plausible",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
@@ -35,7 +35,7 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "86503d416c875fdcf3b6b6c54c22581e96c6bda7",
+   "rev": "cdab3938ccabbdb044be6896e251b5814bec932e",
    "name": "importGraph",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
@@ -45,50 +45,50 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "82d457fb3bdd9efadbae06608ff337d689efdddf",
+   "rev": "2db6054a44326f8c0230ee0570e2ddb894816511",
    "name": "proofwidgets",
    "manifestFile": "lake-manifest.json",
-   "inputRev": "v0.0.97",
+   "inputRev": "v0.0.98",
    "inherited": true,
    "configFile": "lakefile.lean"},
   {"url": "https://github.com/leanprover-community/aesop",
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "f74c7555aaa94eadd7b7bff9170f7983f92aac21",
+   "rev": "f0c6e183ea26531e82773feb4b73ab6595ca17a5",
    "name": "aesop",
    "manifestFile": "lake-manifest.json",
-   "inputRev": "v4.30.0-rc1",
+   "inputRev": "v4.30.0-rc2",
    "inherited": true,
    "configFile": "lakefile.toml"},
   {"url": "https://github.com/leanprover-community/quote4",
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "7aa86cb20b8458748dc24d55dab2d7ea01161057",
+   "rev": "1cc7e819b9b9bc1e87c9edcccb62e0269e00a809",
    "name": "Qq",
    "manifestFile": "lake-manifest.json",
-   "inputRev": "v4.30.0-rc1",
+   "inputRev": "v4.30.0-rc2",
    "inherited": true,
    "configFile": "lakefile.toml"},
   {"url": "https://github.com/leanprover-community/batteries",
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "bf597c77bf9b8e66720d724928207f5911533113",
+   "rev": "5c57f3857ba81924a88b2cdf4f062e34ec04ff11",
    "name": "batteries",
    "manifestFile": "lake-manifest.json",
-   "inputRev": "v4.30.0-rc1",
+   "inputRev": "v4.30.0-rc2",
    "inherited": true,
    "configFile": "lakefile.toml"},
   {"url": "https://github.com/leanprover/lean4-cli",
    "type": "git",
    "subDir": null,
    "scope": "leanprover",
-   "rev": "f7d0ca7c926cdde0562af20394dd25d028b839a5",
+   "rev": "13567aed1ac4f12aea9484178e07e51f8c9f7658",
    "name": "Cli",
    "manifestFile": "lake-manifest.json",
-   "inputRev": "v4.30.0-rc1",
+   "inputRev": "v4.30.0-rc2",
    "inherited": true,
    "configFile": "lakefile.toml"}],
  "name": "«repl-mathlib-tests»",
diff --git a/test/Mathlib/lakefile.toml b/test/Mathlib/lakefile.toml
index 1c9d5f41..ebc85ea7 100644
--- a/test/Mathlib/lakefile.toml
+++ b/test/Mathlib/lakefile.toml
@@ -4,7 +4,7 @@ defaultTargets = ["ReplMathlibTests"]
 [[require]]
 name = "mathlib"
 git = "https://github.com/leanprover-community/mathlib4"
-rev = "v4.30.0-rc1"
+rev = "v4.30.0-rc2"
 
 [[lean_lib]]
 name = "ReplMathlibTests"
diff --git a/test/Mathlib/lean-toolchain b/test/Mathlib/lean-toolchain
index 2210cba4..6c7e31ff 100644
--- a/test/Mathlib/lean-toolchain
+++ b/test/Mathlib/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:v4.30.0-rc1
+leanprover/lean4:v4.30.0-rc2