diff --git a/README.md b/README.md
index 2f25318..125c906 100644
--- a/README.md
+++ b/README.md
@@ -58,6 +58,7 @@ require LeanCopilot from git "https://github.com/lean-dojo/LeanCopilot.git" @ "L
 `LEAN_COPILOT_VERSION` depends on your lean-toolchain:
 | lean-toolchain | Recommended Lean Copilot version |
 | -------------- | -------------------------------- |
+| `v4.10.0-rc2`  | `v1.4.2`                         |
 | `v4.10.0-rc1`  | `v1.4.1`                         |
 | `v4.9.0`       | `v1.4.0`                         |
 | `v4.9.0-rc3`   | `v1.3.3`                         |
diff --git a/lake-manifest.json b/lake-manifest.json
index eb5eb09..8aa2682 100644
--- a/lake-manifest.json
+++ b/lake-manifest.json
@@ -5,20 +5,20 @@
    "type": "git",
    "subDir": null,
    "scope": "",
-   "rev": "2ead90d24b4fac3a05c9c4294daa39bd8686fb98",
+   "rev": "c0efc1fd2a0bec51bd55c5b17348af13d7419239",
    "name": "batteries",
    "manifestFile": "lake-manifest.json",
-   "inputRev": "2ead90d24b4fac3a05c9c4294daa39bd8686fb98",
+   "inputRev": "c0efc1fd2a0bec51bd55c5b17348af13d7419239",
    "inherited": false,
    "configFile": "lakefile.lean"},
   {"url": "https://github.com/leanprover-community/aesop",
    "type": "git",
    "subDir": null,
    "scope": "",
-   "rev": "a64fe24aa94e21404940e9217363a9a1ed9a33a6",
+   "rev": "9c66fa5071dba9578bb20a3bade04bcc15c57fc2",
    "name": "aesop",
    "manifestFile": "lake-manifest.json",
-   "inputRev": "a64fe24aa94e21404940e9217363a9a1ed9a33a6",
+   "inputRev": "9c66fa5071dba9578bb20a3bade04bcc15c57fc2",
    "inherited": false,
    "configFile": "lakefile.toml"}],
  "name": "LeanCopilot",
diff --git a/lakefile.lean b/lakefile.lean
index 7d5ef1d..739fc0c 100644
--- a/lakefile.lean
+++ b/lakefile.lean
@@ -303,8 +303,8 @@ extern_lib libleanffi pkg := do
   buildStaticLib (pkg.nativeLibDir / name) #[ct2O]
 
 
-require batteries from git "https://github.com/leanprover-community/batteries.git" @ "2ead90d24b4fac3a05c9c4294daa39bd8686fb98" -- Lean v4.10.0-rc1
-require aesop from git "https://github.com/leanprover-community/aesop" @ "a64fe24aa94e21404940e9217363a9a1ed9a33a6" -- Lean v4.10.0-rc1
+require batteries from git "https://github.com/leanprover-community/batteries.git" @ "c0efc1fd2a0bec51bd55c5b17348af13d7419239" -- Lean v4.10.0-rc2
+require aesop from git "https://github.com/leanprover-community/aesop" @ "9c66fa5071dba9578bb20a3bade04bcc15c57fc2" -- Lean v4.10.0-rc2
 
 meta if get_config? env = some "dev" then -- dev is so not everyone has to build it
-require «doc-gen4» from git "https://github.com/leanprover/doc-gen4" @ "c369436d21c583a60da62d4513c7b9ea08389074" -- Lean v4.10.0-rc1
+require «doc-gen4» from git "https://github.com/leanprover/doc-gen4" @ "b941c425f6f0f1dc45fe13b850ffa7db1bb20d04" -- Lean v4.10.0-rc2
diff --git a/lean-toolchain b/lean-toolchain
index 72000c6..87481cd 100644
--- a/lean-toolchain
+++ b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:v4.10.0-rc1
\ No newline at end of file
+leanprover/lean4:v4.10.0-rc2
\ No newline at end of file