diff --git a/lake-manifest.json b/lake-manifest.json
index 55f27ce..17ac203 100644
--- a/lake-manifest.json
+++ b/lake-manifest.json
@@ -5,10 +5,10 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "7805acf1864ba1a2e359f86a8f092ccf1438ad83",
+   "rev": "e8dc5fc16c625fc4fe08f42d625523275ddbbb4b",
    "name": "batteries",
    "manifestFile": "lake-manifest.json",
-   "inputRev": "v4.15.0-rc1",
+   "inputRev": "v4.15.0",
    "inherited": false,
    "configFile": "lakefile.toml"}],
  "name": "proofwidgets",
diff --git a/lakefile.lean b/lakefile.lean
index e45dbed..62f024e 100644
--- a/lakefile.lean
+++ b/lakefile.lean
@@ -6,7 +6,7 @@ package proofwidgets where
   buildArchive? := "ProofWidgets4.tar.gz"
   releaseRepo := "https://github.com/leanprover-community/ProofWidgets4"
 
-require "leanprover-community" / "batteries" @ git "v4.15.0-rc1"
+require "leanprover-community" / "batteries" @ git "v4.15.0"
 
 def npmCmd : String :=
   if Platform.isWindows then "npm.cmd" else "npm"
diff --git a/lean-toolchain b/lean-toolchain
index cf25a98..d0eb99f 100644
--- a/lean-toolchain
+++ b/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:v4.15.0-rc1
+leanprover/lean4:v4.15.0