diff --git a/.config/fontconfig/fonts.conf b/.config/fontconfig/fonts.conf
index 2f7707e..06dcecf 100644
--- a/.config/fontconfig/fonts.conf
+++ b/.config/fontconfig/fonts.conf
@@ -250,4 +250,14 @@
     </edit>
   </match>
 
+  <!-- enhance min weight -->
+  <match target="pattern">
+    <test name="weight" compare="eq"><const>regular</const></test>
+    <edit name="weight" mode="assign" binding="strong"><const>medium</const></edit>
+  </match>
+  <match target="pattern">
+    <test name="prgname" compare="eq"><string>Firefox</string></test>
+    <edit name="weight" mode="assign" binding="strong"><int>400</int></edit>
+  </match>
+
 </fontconfig>