diff --git a/pkgs/by-name/gt/gtree/package.nix b/pkgs/by-name/gt/gtree/package.nix
index aac538ae06a5..ecab9982f281 100644
--- a/pkgs/by-name/gt/gtree/package.nix
+++ b/pkgs/by-name/gt/gtree/package.nix
@@ -11,16 +11,16 @@
 # it's updated.
 buildGo126Module (finalAttrs: {
   pname = "gtree";
-  version = "1.13.5";
+  version = "1.13.6";
 
   src = fetchFromGitHub {
     owner = "ddddddO";
     repo = "gtree";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-2OhXb6ivje7Li/sUO+YHfZPRBKoQnUhNbhbFtqlyjyM=";
+    hash = "sha256-E3Nri8kFMh6NYp29vFFNAlJxdfOvLR1inbD+KALXZms=";
   };
 
-  vendorHash = "sha256-UTJQvoiqdF1q4VRUfAx7a7V5UyH+zjwDM5YU7cqVDKE=";
+  vendorHash = "sha256-Pkc2UV/77YdKm5ZWKCSKE0dljUzC5dw1f08T+3MvFTE=";
 
   subPackages = [
     "cmd/gtree"