diff --git a/pkgs/by-name/gr/graphviz/package.nix b/pkgs/by-name/gr/graphviz/package.nix
index 98a60becb373..6eae0490bca2 100644
--- a/pkgs/by-name/gr/graphviz/package.nix
+++ b/pkgs/by-name/gr/graphviz/package.nix
@@ -40,13 +40,13 @@ let
 in
 stdenv.mkDerivation (finalAttrs: {
   pname = "graphviz";
-  version = "14.1.2";
+  version = "15.1.0";
 
   src = fetchFromGitLab {
     owner = "graphviz";
     repo = "graphviz";
     tag = finalAttrs.version;
-    hash = "sha256-LkyiKl0ulS9ujEdVLfyeoc4CtjITd6CAc35IUtlHSfw=";
+    hash = "sha256-5v/ib8hwqHrJLs+jvDGvg0aJiKIt8ipXEd1EUzew7XU=";
   };
 
   nativeBuildInputs = [