diff --git a/cran-comments.md b/cran-comments.md
index fed512508..371508a27 100644
--- a/cran-comments.md
+++ b/cran-comments.md
@@ -1,34 +1,28 @@
-# Seurat v5.2.0
+# Seurat v5.2.1
+This update is a small patch release to address failing M1mac checks ahead of the deadline on 2025-01-28.
 
 ## Test environments
-* local ubuntu 20.04 install, R 4.4.2
-* win-builder (oldrelease, release, devel)
-* mac-builder (devel)
-
-We were unable to test on r-release on mac-builder because the portal seemed to point to the wrong version.
+* macOS 14.6.1 (Apple M3, arm64, local install): R-release
+* Ubuntu 22.04 (Docker container): R-release
+* [win-builder](https://win-builder.r-project.org/): R-oldrelease, R-release, R-devel
+* [macOS builder](https://mac.r-project.org/macbuilder/submit.html): R-release, R-devel
 
 ## R CMD check results
+There were no ERRORs or WARNINGs but there was one NOTE.
 
-There were no ERRORs or WARNINGs
-
-There was one NOTE
-
-❯ checking CRAN incoming feasibility ... [12s/61s] NOTE
+```
+❯ checking CRAN incoming feasibility ... [15s/92s] NOTE
   Maintainer: ‘Rahul Satija <seurat@nygenome.org>’
   
   Suggests or Enhances not in mainstream repositories:
     BPCells, enrichR, presto
   Availability using Additional_repositories specification:
     BPCells   yes   https://bnprks.r-universe.dev   
-    enrichR   yes   https://cran.r-universe.dev     
+    enrichR   yes   https://satijalab.r-universe.dev
     presto    yes   https://satijalab.r-universe.dev
+```
 
-BPCells, enrichR, and presto are hosted on R-universe and used conditionally in Seurat.
-
-## Downstream dependencies
-
-There are 3 packages that depend on Seurat: CACIMAR, scCustomize, and SCdeconR; this update does not impact their functionality.
-
-There are 34 packages that import Seurat: AnanseSeurat, APackOfTheClones, bbknnR, CAESAR.Suite, CAMML, DR.SC, DWLS, GeneNMF, ggsector, mixhvg, nebula, Platypus, PoweREST, PRECAST, ProFAST, rPanglaoDB, scAnnotate, scaper, sccca, scDiffCom, scGate, scGOclust, SCIntRuler, scMappR, scperturbR, scpoisson, SCRIP, scRNAstat, SignacX, SoupX, SpaCCI, SPECK, STREAK, and tidyseurat; this update does not impact their functionality.
+`BPCells`, `enrichR`, and `presto` are hosted on R-universe and used conditionally in `Seurat`.
 
-There are 27 packages that suggest Seurat: BisqueRNA, Canek, cellpypes, CIARA, ClustAssess, clustree, combiroc, conos, countland, CRMetrics, CytoSimplex, DIscBIO, dyngen, easybio, grandR, harmony, laminr, mxfda, RESET, rliger, SCORPIUS, SCpubr, scregclust, Signac, SuperCell, treefit, and VAM; this update does not impact their functionality.
+## Reverse dependency check results
+We checked 65 reverse dependencies, comparing `R CMD check` results across the CRAN and dev versions of this package, and saw no new problems.