diff --git a/lake-manifest.json b/lake-manifest.json
index b6975fa1f851e..d34b59248e498 100644
--- a/lake-manifest.json
+++ b/lake-manifest.json
@@ -65,10 +65,10 @@
    "type": "git",
    "subDir": null,
    "scope": "leanprover-community",
-   "rev": "e8dc5fc16c625fc4fe08f42d625523275ddbbb4b",
+   "rev": "3f1f94ef36122c0b4795851c37fcc77558b25355",
    "name": "batteries",
    "manifestFile": "lake-manifest.json",
-   "inputRev": "v4.15.0",
+   "inputRev": "post_reminder2",
    "inherited": false,
    "configFile": "lakefile.toml"},
   {"url": "https://github.com/leanprover/lean4-cli",
diff --git a/lakefile.lean b/lakefile.lean
index 44bbb99b71251..985e0959f9b14 100644
--- a/lakefile.lean
+++ b/lakefile.lean
@@ -7,7 +7,7 @@ open Lake DSL
 ## Mathlib dependencies on upstream projects
 -/
 
-require "leanprover-community" / "batteries" @ git "v4.15.0"
+require "leanprover-community" / "batteries" from git "https://github.com/leanprover-community/batteries" @ "post_reminder2"
 require "leanprover-community" / "Qq" @ git "v4.15.0"
 require "leanprover-community" / "aesop" @ git "v4.15.0"
 require "leanprover-community" / "proofwidgets" @ git "v0.0.48"