diff --git a/Makefile b/Makefile
index efadf4c..603216b 100644
--- a/Makefile
+++ b/Makefile
@@ -42,7 +42,11 @@ lint-apply: lint-black-apply lint-isort-apply ## apply all the linter's suggesti
 
 .PHONY: test
 test:
-	pytest -v --cov --ignore dev_scripts --ignore tests/test_large_set.py
+	# Make each GUI test run as a separate process, to avoid segfaults due to
+	# shared state.
+	# See more in https://github.com/freedomofpress/dangerzone/issues/493
+	pytest --co -q tests/gui | grep -v ' collected' | xargs -n 1 pytest -v
+	pytest -v --cov --ignore dev_scripts --ignore tests/gui --ignore tests/test_large_set.py
 
 
 .PHONY: test-large-requirements