diff --git a/pkgs/servers/mautrix-telegram/default.nix b/pkgs/servers/mautrix-telegram/default.nix
index 4bb3cabf206c..349c4e371ffc 100644
--- a/pkgs/servers/mautrix-telegram/default.nix
+++ b/pkgs/servers/mautrix-telegram/default.nix
@@ -9,11 +9,11 @@ let
   python = python3.override {
     packageOverrides = self: super: {
       tulir-telethon = self.telethon.overridePythonAttrs (oldAttrs: rec {
-        version = "1.33.0a1";
+        version = "1.34.0a2";
         pname = "tulir-telethon";
         src = fetchPypi {
           inherit pname version;
-          hash = "sha256-at/MiVXAKFhMH1N1m+K9HmYvxvzYa7xKhIlpDs7Kk3U=";
+          hash = "sha256-+3mk+H0sQD3ssEPihE/PvWpYVZzkGQMXhFS64m7joJ8=";
         };
         doCheck = false;
       });
@@ -22,14 +22,14 @@ let
 in
 python.pkgs.buildPythonPackage rec {
   pname = "mautrix-telegram";
-  version = "0.15.0";
+  version = "0.15.1";
   disabled = python.pythonOlder "3.8";
 
   src = fetchFromGitHub {
     owner = "mautrix";
     repo = "telegram";
     rev = "refs/tags/v${version}";
-    hash = "sha256-2XPZkBAe15Rf1tv4KGhwRhoRf1wv+moADWDMNmkERtk=";
+    hash = "sha256-9ZXyjfbDRwO0wRPMGstlLIKvztp2xAjoqpTwBYJji/4=";
   };
 
   format = "setuptools";