diff --git a/main.py b/main.py
index 8a82312..0db2af5 100755
--- a/main.py
+++ b/main.py
@@ -33,6 +33,7 @@ def draw_symbol(img, symbol, color, x, y):
     with Drawing() as draw:
         draw.font = 'DejaVu-Sans-Mono'
         draw.font_size = 100
+        draw.font_weight = 900
         draw.stroke_color = Color('black')
         draw.stroke_width = 3
         draw.text_alignment = 'center'