diff --git a/pkgs/development/python-modules/telethon/default.nix b/pkgs/development/python-modules/telethon/default.nix
index 3c3bbf5756e0..f40809dabf9e 100644
--- a/pkgs/development/python-modules/telethon/default.nix
+++ b/pkgs/development/python-modules/telethon/default.nix
@@ -12,7 +12,7 @@
 
 buildPythonPackage rec {
   pname = "telethon";
-  version = "1.25.1";
+  version = "1.26.1";
   format = "pyproject";
   disabled = pythonOlder "3.5";
 
@@ -20,7 +20,7 @@ buildPythonPackage rec {
     owner = "LonamiWebs";
     repo = "Telethon";
     rev = "refs/tags/v${version}";
-    hash = "sha256-xmFoCUqYo600RH72KWG/aM7hKGiTYdCBsbPOFipxIzA=";
+    hash = "sha256-RxnC+PVSnLeCZ1xap6n6CjpeA8Ig6oLGiB0LDxqUmsA=";
   };
 
   patchPhase = ''