diff --git a/pkgs/applications/networking/instant-messengers/telegram/telegram-desktop/unwrapped.nix b/pkgs/applications/networking/instant-messengers/telegram/telegram-desktop/unwrapped.nix
index b554349eeef3..3ee0cb74b2c5 100644
--- a/pkgs/applications/networking/instant-messengers/telegram/telegram-desktop/unwrapped.nix
+++ b/pkgs/applications/networking/instant-messengers/telegram/telegram-desktop/unwrapped.nix
@@ -45,14 +45,14 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "telegram-desktop-unwrapped";
-  version = "6.7.6";
+  version = "6.7.8";
 
   src = fetchFromGitHub {
     owner = "telegramdesktop";
     repo = "tdesktop";
     rev = "v${finalAttrs.version}";
     fetchSubmodules = true;
-    hash = "sha256-TGI1SLtzjjDaodQc+JIVRRiwCy9PCO3MuPfv2DpDFxo=";
+    hash = "sha256-lcIkkr9i/zVRNNQ3qi6O6xIgtpQgkVWOGIttHqmAQv8=";
   };
 
   nativeBuildInputs = [
diff --git a/pkgs/by-name/ma/materialgram/package.nix b/pkgs/by-name/ma/materialgram/package.nix
index c84e123cb96d..d63199543aac 100644
--- a/pkgs/by-name/ma/materialgram/package.nix
+++ b/pkgs/by-name/ma/materialgram/package.nix
@@ -11,12 +11,12 @@ telegram-desktop.override {
   unwrapped = telegram-desktop.unwrapped.overrideAttrs (
     finalAttrs: previousAttrs: {
       pname = "materialgram-unwrapped";
-      version = "6.4.0.1";
+      version = "6.7.7.1";
 
       src = fetchFromGitHub {
         owner = "kukuruzka165";
         repo = "materialgram";
-        hash = "sha256-aNgvuuowyhEYUm5ie2vxCsdpaDuuZ/3xZJqWA0bN5Lc=";
+        hash = "sha256-Cy0ooQZOhfE+QBaRDblKXhmqYsKJ0TfeHsfJaVLVn8o=";
         tag = "v${finalAttrs.version}";
         fetchSubmodules = true;
       };