diff --git a/test/fixtures/page_generation/page.py b/test/fixtures/page_generation/page.py
index 142bc2d..b2f2850 100644
--- a/test/fixtures/page_generation/page.py
+++ b/test/fixtures/page_generation/page.py
@@ -543,11 +543,13 @@ def get_font_picker(font_dir=None):
     return RandomFontPicker(font_dir=font_dir)
 
 
+@lru_cache(maxsize=None)
 def pick_random_mono_space_font_available_on_system():
     font_picker = get_font_picker()
     return font_picker.pick_random_mono_space_font_available_on_system()
 
 
+@lru_cache(maxsize=None)
 def pick_random_font_available_on_system():
     font_picker = get_font_picker()
     return font_picker.pick_random_font_available_on_system(includes="mono")