diff --git a/pkgs/by-name/li/libsignal-ffi/package.nix b/pkgs/by-name/li/libsignal-ffi/package.nix
index 1e51573339fd..a6aef3914755 100644
--- a/pkgs/by-name/li/libsignal-ffi/package.nix
+++ b/pkgs/by-name/li/libsignal-ffi/package.nix
@@ -21,14 +21,14 @@ rustPlatform.buildRustPackage rec {
   pname = "libsignal-ffi";
   # must match the version used in mautrix-signal
   # see https://github.com/mautrix/signal/issues/401
-  version = "0.84.0";
+  version = "0.86.4";
 
   src = fetchFromGitHub {
     fetchSubmodules = true;
     owner = "signalapp";
     repo = "libsignal";
     tag = "v${version}";
-    hash = "sha256-fTXiNgto1m6PlGQQuBUPaWkS5fHTVunCn3eGKjmQlHM=";
+    hash = "sha256-f2f2AY4PYs+HcaordHAIXHhvyfgZ9D3GrfW5wC06/h4=";
   };
 
   nativeBuildInputs = [
@@ -40,7 +40,7 @@ rustPlatform.buildRustPackage rec {
   env.BORING_BSSL_PATH = "${boringssl-wrapper}";
   env.NIX_LDFLAGS = if stdenv.hostPlatform.isDarwin then "-lc++" else "-lstdc++";
 
-  cargoHash = "sha256-qnj9bVnnS76Sk9DfMprJn2xrc2G30yVXz3fTjjY3gnA=";
+  cargoHash = "sha256-JKFO/+t++3WEsqnCEsI/S4wpNUFiCIIudiRbjrT/i6k=";
 
   cargoBuildFlags = [
     "-p"
diff --git a/pkgs/by-name/ma/mautrix-signal/package.nix b/pkgs/by-name/ma/mautrix-signal/package.nix
index c9075fdefe4c..304bfda030cb 100644
--- a/pkgs/by-name/ma/mautrix-signal/package.nix
+++ b/pkgs/by-name/ma/mautrix-signal/package.nix
@@ -20,14 +20,14 @@ let
 in
 buildGoModule rec {
   pname = "mautrix-signal";
-  version = "25.10";
-  tag = "v0.2510.0";
+  version = "25.11";
+  tag = "v0.2511.0";
 
   src = fetchFromGitHub {
     owner = "mautrix";
     repo = "signal";
-    tag = tag;
-    hash = "sha256-Bz4jBI/lLhCxZW7JmaX6dlVwbB3dLXn5v/8gMKcFKSE=";
+    inherit tag;
+    hash = "sha256-ynHJcVoSDFOulIE5Z5qmLGgmqGYtcAc2r+NhJ+THdHU=";
   };
 
   buildInputs =
@@ -44,7 +44,7 @@ buildGoModule rec {
 
   CGO_LDFLAGS = lib.optional withGoolm [ cppStdLib ];
 
-  vendorHash = "sha256-Sur29i5ih7xK85maVAaq9cwWJVGtwS7hPOxQI4YduNI=";
+  vendorHash = "sha256-oz/rCeA/UgwmIZhHxbcty5XWiIecBmHs1M1lavugZ24=";
 
   ldflags = [
     "-X"