diff --git a/lake-manifest.json b/lake-manifest.json
index b4cc62b..86fcb0e 100644
--- a/lake-manifest.json
+++ b/lake-manifest.json
@@ -4,11 +4,11 @@
  [{"url": "https://github.com/leanprover/std4",
    "type": "git",
    "subDir": null,
-   "rev": "f3447c3732c9d6e8df3bdad78e5ecf7e8b353bbc",
+   "rev": "ff9850c4726f6b9fb8d8e96980c3fcb2900be8bd",
    "name": "std",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
-   "inherited": false,
+   "inherited": true,
    "configFile": "lakefile.lean"},
   {"url": "https://github.com/leanprover-community/quote4",
    "type": "git",
@@ -22,7 +22,7 @@
   {"url": "https://github.com/leanprover-community/aesop",
    "type": "git",
    "subDir": null,
-   "rev": "8be30c25e3caa06937feeb62f7ca898370f80ee9",
+   "rev": "056ca0fa8f5585539d0b940f532d9750c3a2270f",
    "name": "aesop",
    "manifestFile": "lake-manifest.json",
    "inputRev": "master",
@@ -40,7 +40,7 @@
   {"url": "https://github.com/leanprover/lean4-cli",
    "type": "git",
    "subDir": null,
-   "rev": "be8fa79a28b8b6897dce0713ef50e89c4a0f6ef5",
+   "rev": "a751d21d4b68c999accb6fc5d960538af26ad5ec",
    "name": "Cli",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
@@ -49,7 +49,7 @@
   {"url": "https://github.com/leanprover-community/import-graph.git",
    "type": "git",
    "subDir": null,
-   "rev": "bbcffbcc19d69e13d5eea716283c76169db524ba",
+   "rev": "64d082eeaad1a8e6bbb7c23b7a16b85a1715a02f",
    "name": "importGraph",
    "manifestFile": "lake-manifest.json",
    "inputRev": "main",
@@ -58,10 +58,10 @@
   {"url": "https://github.com/leanprover-community/mathlib4.git",
    "type": "git",
    "subDir": null,
-   "rev": "c13f0f5bfdf81a648b610b96e8381ccde5da237a",
+   "rev": "59fdb6b04d7d16825a54483d550d9572ff473abf",
    "name": "mathlib",
    "manifestFile": "lake-manifest.json",
-   "inputRev": null,
+   "inputRev": "v4.7.0-rc2",
    "inherited": false,
    "configFile": "lakefile.lean"}],
  "name": "Ssreflect",
diff --git a/lakefile.lean b/lakefile.lean
index db12088..048c164 100644
--- a/lakefile.lean
+++ b/lakefile.lean
@@ -11,7 +11,7 @@ package Ssreflect where
 
 -- require std from git "https://github.com/leanprover/std4" @ "main"
 
-require mathlib from git "https://github.com/leanprover-community/mathlib4.git"
+require mathlib from git "https://github.com/leanprover-community/mathlib4.git" @ "v4.7.0-rc2"
 
 -- require loogle from git "https://github.com/nomeata/loogle" @ "master"