diff --git a/services/tests/pixelfed-garage.nix b/services/tests/pixelfed-garage.nix
index 97c49838..16bfce77 100644
--- a/services/tests/pixelfed-garage.nix
+++ b/services/tests/pixelfed-garage.nix
@@ -17,17 +17,16 @@ let
     import sys
     from selenium import webdriver
     from selenium.webdriver.common.by import By
-    from selenium.webdriver.chrome.options import Options
+    from selenium.webdriver.firefox.options import Options
   '';
 
   seleniumSetup = ''
     print("Create and configure driver...", file=sys.stderr)
     options = Options()
-    # options.add_argument("--headless=new")
-    service = webdriver.ChromeService(executable_path="${lib.getExe pkgs.chromedriver}")  # noqa: E501
-    driver = webdriver.Chrome(options=options, service=service)
+    options.add_argument("--headless")
+    service = webdriver.FirefoxService(executable_path="${lib.getExe pkgs.geckodriver}")  # noqa: E501
+    driver = webdriver.Firefox(options=options, service=service)
     driver.implicitly_wait(30)
-    driver.set_window_size(1280, 960)
   '';
 
   seleniumPixelfedLogin = ''
@@ -154,8 +153,8 @@ pkgs.nixosTest {
         # TODO: pair down
         environment.systemPackages = with pkgs; [
           python3
-          chromium
-          chromedriver
+          firefox-unwrapped
+          geckodriver
           xh
           seleniumScriptPostPicture
           seleniumScriptGetSrc
@@ -168,7 +167,7 @@ pkgs.nixosTest {
           ## without this we get frivolous errors in the logs
           MC_REGION = "garage";
         };
-        # chrome does not like being run as root
+        # Do not run Selenium scripts as root
         users.users.selenium = {
           isNormalUser = true;
         };