diff --git a/pkgs/applications/networking/cluster/argo/default.nix b/pkgs/applications/networking/cluster/argo/default.nix
index 8a6e3ac65f74..52012a361709 100644
--- a/pkgs/applications/networking/cluster/argo/default.nix
+++ b/pkgs/applications/networking/cluster/argo/default.nix
@@ -34,16 +34,16 @@ let
 in
 buildGoModule rec {
   pname = "argo";
-  version = "3.5.5";
+  version = "3.5.6";
 
   src = fetchFromGitHub {
     owner = "argoproj";
     repo = "argo";
     rev = "refs/tags/v${version}";
-    hash = "sha256-SONi7GmFgBEA+5l8ftjFP3+hk55eZmhkLLuu5FfyVFo=";
+    hash = "sha256-CcPY9eEpvDTIxilxHI+VBVVRxZy/82fi6uayBrGR/Dc=";
   };
 
-  vendorHash = "sha256-XjwtgJdBk9YIro1WlunYmKkuZSrSJTN/BLXn7i3+9xY=";
+  vendorHash = "sha256-ttpDGeANQyrTfRyNGFkmJFpE+nnjz8PZN+0HScBJ1yg=";
 
   doCheck = false;