diff --git a/Makefile b/Makefile
index c65da76..a8db846 100644
--- a/Makefile
+++ b/Makefile
@@ -26,7 +26,7 @@
 	source _build/venv/bin/activate && pytest --timeout=300 --timeout_method=thread --capture=no --hypothesis-verbosity=verbose
 
 test_long: _build/.stamp_venv
-	source _build/venv/bin/activate && pytest --timeout=3600 --timeout_method=thread --capture=no --hypothesis-profile=ci
+	source _build/venv/bin/activate && pytest --timeout=43200 --timeout_method=thread --capture=no --hypothesis-profile=ci
 
 venv_bash: _build/.stamp_venv
 	source _build/venv/bin/activate && bash