diff --git a/pkgs/by-name/firefox-extensions/package.nix b/pkgs/by-name/firefox-extensions/package.nix
index 452b95cd0..0bbeeb45c 100644
--- a/pkgs/by-name/firefox-extensions/package.nix
+++ b/pkgs/by-name/firefox-extensions/package.nix
@@ -109,7 +109,7 @@ let
 
     passthru.updateScript = nix-update-script {
       # ignore beta versions
-      extraArgs = [ "--version-regex" "([0-9.]+)" ];
+      extraArgs = [ "--version-regex" "([0-9.]+)$" ];
     };
     passthru.extid = extid;
   };
@@ -174,7 +174,7 @@ let
         # url = "https://github.com/gorhill/uBlock/releases/download/${version}/uBlock0_${version}.firefox.xpi";
         url = "https://github.com/gorhill/uBlock/releases/download/${version}/uBlock0_${version}.firefox.signed.xpi";
         version = "1.63.0";
-        hash = "sha256-RqleAoNzRCRTwH/MMSi0wuo+/G875yc3csyXNcqJO+Q=";
+        hash = "sha256-iiCChLU1ZZV8h4qTtxe0bqDQecsJchQGK3a7ltwYoPQ=";
       };
     };
 })  ).overrideScope (self: super: