diff --git a/modules/programs/firefox/mkFirefoxModule.nix b/modules/programs/firefox/mkFirefoxModule.nix
index 33c022890..eafaeca1a 100644
--- a/modules/programs/firefox/mkFirefoxModule.nix
+++ b/modules/programs/firefox/mkFirefoxModule.nix
@@ -333,6 +333,14 @@ in
       example = {
         DefaultDownloadDirectory = "\${home}/Downloads";
         BlockAboutConfig = true;
+        ExtensionSettings = {
+          "uBlock0@raymondhill.net" = {
+            install_url = "https://addons.mozilla.org/firefox/downloads/latest/ublock-origin/latest.xpi";
+            installation_mode = "force_installed";
+            default_area = "menupanel";
+            private_browsing = true;
+          };
+        };
       };
     });