diff --git a/pkgs/by-name/ta/tabbyapi/package.nix b/pkgs/by-name/ta/tabbyapi/package.nix
index e6eed91c61ff..74680320bd80 100644
--- a/pkgs/by-name/ta/tabbyapi/package.nix
+++ b/pkgs/by-name/ta/tabbyapi/package.nix
@@ -7,14 +7,14 @@
 }:
 python3Packages.buildPythonApplication {
   pname = "tabbyapi";
-  version = "0-unstable-2026-07-31";
+  version = "0-unstable-2026-08-08";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "theroyallab";
     repo = "tabbyAPI";
-    rev = "29680f496b57e3ed1a496c580677d2d67ac729b8";
-    hash = "sha256-eB8Q4iVlNCrgHHWutuhxzD+bQfC5Yx3z2rSCCSFsrL4=";
+    rev = "3d2848d03184344664b9a8ed7685033e87744742";
+    hash = "sha256-gmvr8d0vGlkFcSbjSvECGiYWM69Y2c8ZWqL59+s34Yw=";
   };
 
   build-system = with python3Packages; [
@@ -44,8 +44,7 @@ python3Packages.buildPythonApplication {
       sse-starlette
       packaging
       tokenizers
-      formatron
-      kbnf
+      numpy
       aiofiles
       aiohttp
       async-lru
diff --git a/pkgs/development/python-modules/exllamav3/default.nix b/pkgs/development/python-modules/exllamav3/default.nix
index 86cd146e35ee..ef5f8030ce4f 100644
--- a/pkgs/development/python-modules/exllamav3/default.nix
+++ b/pkgs/development/python-modules/exllamav3/default.nix
@@ -8,8 +8,7 @@
   setuptools,
 
   flash-linear-attention,
-  formatron,
-  kbnf,
+  llguidance,
   marisa-trie,
   ninja,
   numpy,
@@ -27,14 +26,14 @@ let
 in
 buildPythonPackage.override { inherit (torch) stdenv; } (finalAttrs: {
   pname = "exllamav3";
-  version = "1.3.0";
+  version = "1.4.1";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "turboderp-org";
     repo = "exllamav3";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-pWdh5fiGZEkdSLXvI5DAEdj6XmBFquzew57L1YIsEg8=";
+    hash = "sha256-6TzJbLGcp3rmlpIRiz26bYVbW2ZORrsJF3257Iv2QZc=";
   };
 
   pythonRelaxDeps = [
@@ -59,8 +58,7 @@ buildPythonPackage.override { inherit (torch) stdenv; } (finalAttrs: {
 
   dependencies = [
     flash-linear-attention
-    formatron
-    kbnf
+    llguidance
     marisa-trie
     numpy
     pillow