diff --git a/pkgs/by-name/fi/fiddler-everywhere/package.nix b/pkgs/by-name/fi/fiddler-everywhere/package.nix
index b3546a6e6c37..d3eaca63a316 100644
--- a/pkgs/by-name/fi/fiddler-everywhere/package.nix
+++ b/pkgs/by-name/fi/fiddler-everywhere/package.nix
@@ -8,11 +8,11 @@
 
 let
   pname = "fiddler-everywhere";
-  version = "6.5.0";
+  version = "6.6.0";
 
   src = fetchurl {
     url = "https://downloads.getfiddler.com/linux/fiddler-everywhere-${version}.AppImage";
-    hash = "sha256-XEmQeEXqQpVASJ5NJEhZZOkIPbSbj/DOUbfbdAJXSRk=";
+    hash = "sha256-qSQx9uz8P6k/wdPpe7XwhQ6qCZp6IUoLOZnkDWMFS3E=";
   };
 
   appimageContents = appimageTools.extract {