diff --git a/Makefile b/Makefile
index 5a805f1..202f8ea 100644
--- a/Makefile
+++ b/Makefile
@@ -83,7 +83,7 @@ deps-e2e: venv
 	@$(VENV_PIP) install -e ".[e2e]"
 
 playwright-install: deps-e2e
-	@$(VENV_PY) -m playwright install chromium
+	@$(VENV_PY) -m playwright install chromium chromium-headless-shell
 
 e2e-up:
 	$(COMPOSE) up -d
diff --git a/flake.nix b/flake.nix
index 2cce22a..b65f146 100644
--- a/flake.nix
+++ b/flake.nix
@@ -64,7 +64,7 @@
           text = ''
             # Install Playwright browsers.
             # IMPORTANT: Do not print anything to stdout (tests expect token-only stdout).
-            exec ${pythonPlaywright}/bin/python -m playwright install chromium 1>&2
+            exec ${pythonPlaywright}/bin/python -m playwright install chromium chromium-headless-shell 1>&2
           '';
         };
       in