diff --git a/pkgs/by-name/sl/slack/sources.nix b/pkgs/by-name/sl/slack/sources.nix
index 52cc93c4d730..53b6e5de0aae 100644
--- a/pkgs/by-name/sl/slack/sources.nix
+++ b/pkgs/by-name/sl/slack/sources.nix
@@ -1,19 +1,19 @@
 # Generated by ./update.sh - do not update manually!
-# Last updated: 2026-05-14
+# Last updated: 2026-07-23
 { fetchurl }:
 {
   aarch64-darwin = {
-    version = "4.49.89";
+    version = "4.51.180";
     src = fetchurl {
-      url = "https://downloads.slack-edge.com/desktop-releases/mac/arm64/4.49.89/Slack-4.49.89-macOS.dmg";
-      hash = "sha256-u5NppmmRyC+6HaPIcSSGOOdVRiZdT9GE1eHvad6rYdY=";
+      url = "https://downloads.slack-edge.com/desktop-releases/mac/arm64/4.51.180/Slack-4.51.180-macOS.dmg";
+      hash = "sha256-6QhuZWEwQiW8ZyYTJRLMZq5MayBgX9xlBLdhttiTaoA=";
     };
   };
   x86_64-linux = {
-    version = "4.49.89";
+    version = "4.51.180";
     src = fetchurl {
-      url = "https://downloads.slack-edge.com/desktop-releases/linux/x64/4.49.89/slack-desktop-4.49.89-amd64.deb";
-      hash = "sha256-Shf4/igTudAwg0ve8iGjpLIS8AL/k90RDN92JyAMGy8=";
+      url = "https://downloads.slack-edge.com/desktop-releases/linux/x64/4.51.180/slack-desktop-4.51.180-amd64.deb";
+      hash = "sha256-qkXhUXlHAzdwEqmtePCyFSw2iFLghSZ65ona+1wwjqE=";
     };
   };
 }