diff --git a/pkgs/by-name/si/signal-desktop/libsignal-node.nix b/pkgs/by-name/si/signal-desktop/libsignal-node.nix
index a54838f71deb..8a7a3d2e26dc 100644
--- a/pkgs/by-name/si/signal-desktop/libsignal-node.nix
+++ b/pkgs/by-name/si/signal-desktop/libsignal-node.nix
@@ -14,23 +14,23 @@
 }:
 rustPlatform.buildRustPackage (finalAttrs: {
   pname = "libsignal-node";
-  version = "0.88.0";
+  version = "0.88.2";
 
   src = fetchFromGitHub {
     owner = "signalapp";
     repo = "libsignal";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-te88kmhMzZWzNNnH5Mn6/lo3v6ZKNq0bC5ZFvvSH7po=";
+    hash = "sha256-hHBxHvAaJ3clCjFwKbyavO1ixe9k8DLdEa5+2AWy+Kk=";
   };
 
-  cargoHash = "sha256-ebEiReugsUrnBOimv90iqRrSjgOG+rgkraS2nb1aFD0=";
+  cargoHash = "sha256-wV9gKdxOcgW1M/cEbRhre9ReDBX+TgQbxVBw1cVZwGY=";
 
   npmRoot = "node";
   npmDeps = fetchNpmDeps {
     name = "${finalAttrs.pname}-npm-deps";
     inherit (finalAttrs) version src;
     sourceRoot = "${finalAttrs.src.name}/${finalAttrs.npmRoot}";
-    hash = "sha256-wsZNXlFGsZB46evQCRowmy9yU0Au3XwHQXQ6IHLJcWg=";
+    hash = "sha256-lAS45lXz8gAI96Nge1RdF4zPuOz/Z/8L1EMgob1lUZU=";
   };
 
   nativeBuildInputs = [
diff --git a/pkgs/by-name/si/signal-desktop/package.nix b/pkgs/by-name/si/signal-desktop/package.nix
index 874e886fc531..d0c0a280dbad 100644
--- a/pkgs/by-name/si/signal-desktop/package.nix
+++ b/pkgs/by-name/si/signal-desktop/package.nix
@@ -55,13 +55,13 @@ let
     '';
   });
 
-  version = "8.2.0";
+  version = "8.2.1";
 
   src = fetchFromGitHub {
     owner = "signalapp";
     repo = "Signal-Desktop";
     tag = "v${version}";
-    hash = "sha256-KejUmkTko5xg9LhswYy6qSb+8S+FhqK2cWHYSngUnVs=";
+    hash = "sha256-Fti57SjU0LAQsJth01rTlsmDoaOTVpN56t7FGuPM8nc=";
   };
 
   sticker-creator = stdenv.mkDerivation (finalAttrs: {
@@ -163,15 +163,15 @@ stdenv.mkDerivation (finalAttrs: {
     fetcherVersion = 3;
     hash =
       if withAppleEmojis then
-        "sha256-0Cfhd5s3c4cnUv/YY07fUnsG0WKfYT+EGrHlFIkS1Zw="
+        "sha256-gfMqGzO0bvDCfcbb4gvGVA62zk8MyAYlZ2zcQrwVT88="
       else
-        "sha256-WYyGBA6y/vxf1nPwiNIuXYkuk1ZbZPrM1+7VXupidjA=";
+        "sha256-soPMTGqg4drhiEtGp2SJOZdGOEXKpH2oWYVPTPhIkQg=";
   };
 
   env = {
     ELECTRON_SKIP_BINARY_DOWNLOAD = "1";
     SIGNAL_ENV = "production";
-    SOURCE_DATE_EPOCH = 1773262210;
+    SOURCE_DATE_EPOCH = 1773422147;
   }
   // lib.optionalAttrs stdenv.hostPlatform.isDarwin {
     # Disable code signing during local macOS builds.